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Mar 21, 2023
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Physics Fun: Easy Basics of Forces, Vector Diagrams, and Upthrust!
jasmine
@jasmine01928472
Vector Diagrams and Moments
This page delves into vector diagrams in physics and introduces the concepts of moments, levers, and gears.
Vector diagrams, also known as free body diagrams, are essential tools in physics. They show forces, their direction, and their magnitude using arrows of different sizes. Scale vector diagrams are particularly useful when forces act diagonally.
Example: A scale vector diagram can illustrate the effect of more than one force on an object.
The page explains that expressing forces as horizontal and vertical components can help determine the effect of one force on another.
The concept of moments is introduced:
Definition: A moment is the turning effect of an object moving due to a force around a pivot.
An important principle of moments is highlighted:
Highlight: When balanced, clockwise movement is equal to anticlockwise movement.
The page also touches on levers and gears in GCSE Physics, explaining that they can transmit rotational effects of forces, increase the magnitude of a force, or increase the distance a force moves over.
Pressure in Fluids and Upthrust
This page focuses on fluid pressure and upthrust concepts, which are crucial in understanding how objects behave in liquids and gases.
The page begins by defining a fluid as either a liquid or a gas. In fluids, pressure is caused by particles colliding with either an object or the walls of the container.
Highlight: In a column of liquid, pressure is highest at the bottom due to the greater weight of the liquid above.
The density of the liquid also affects pressure, as denser liquids have more particles creating additional weight.
The concept of upthrust is then introduced:
Definition: Upthrust is the upwards force exerted by a fluid on a submerged object.
The page explains the conditions for floating and sinking:
- An object floats when its weight equals the upthrust
- An object sinks when its weight is greater than the upthrust
Archimedes' Principle is also explained:
Definition: The upthrust exerted on a body immersed in fluid equals the weight of the fluid the body displaces.
This principle helps explain why dense objects sink while less dense objects float. Dense objects do not displace enough fluid to equal their weight, so they sink, and vice versa.
Speed, Velocity, Distance, and Displacement
This page covers the fundamental concepts of speed, velocity, distance, and displacement, which are essential for understanding motion in physics.
The page begins by differentiating between speed and velocity:
Definition: Speed is how fast an object is travelling , while velocity is the speed of an object in a given direction .
It's noted that when travelling in a straight line with constant speed, an object will have a constant velocity. However, when travelling in a circle, velocity is constantly changing, resulting in acceleration.
Example: An object orbiting a planet has a constantly changing velocity, even if its speed remains constant.
The page also explains that when turning a corner, speed may stay the same, but velocity changes due to the change in direction.
Next, the concepts of distance and displacement are introduced:
Definition: Distance is how far an object moves , while displacement is how far an object moved and in what direction .
The page briefly mentions the concept of resultant force, which occurs when more than one force acts on an object. This ties back to the earlier discussion on vector diagrams.
Distance-Time Graphs and Elasticity
This final page covers two important topics in physics: distance-time graphs and elasticity.
Distance-time graphs are powerful tools for analyzing motion. The page explains that:
Highlight: Speed can be found from the gradient of a distance-time graph.
If an object is accelerating, the graph will be a curve. In this case, the speed at any point can be found by calculating the gradient of the tangent to the curve at that point.
The second half of the page focuses on elasticity. It explains that to change an object's shape, more than one force must be applied.
Definition: An object is elastically deformed if it returns to its original shape when forces are removed. If it doesn't return to its original shape, it's inelastically deformed.
The relationship between extension and force is described:
Highlight: The extension of an object is proportional to the force applied, up to a certain point called the limit of proportionality.
The page introduces the concept of spring constant, which indicates how easily a spring can be stretched or compressed. It also explains that stretching or compressing a spring stores elastic potential energy.
Finally, the page notes that the work done before the limit of proportionality is reached can be calculated, though the specific formula is not provided in this summary.
The Basics of Forces and Work
This page introduces fundamental concepts in physics, focusing on forces and work.
Forces are vector quantities, meaning they have both magnitude and direction. They can be categorized into contact forces and non-contact forces . Forces occur when objects interact with each other.
Gravity is a crucial force in physics. It is a force of attraction between all masses. The page explains the difference between mass and weight:
Definition: Mass is the amount of matter in an object, while weight is the force acting on an object due to gravity.
The weight of an object depends on the gravitational field strength and is directly proportional to its mass.
The concept of work done is also introduced:
Definition: Work done is the amount of energy needed to move an object a distance.
The page notes that 1 Joule equals 1 Newton.
Finally, the difference between scalar and vector quantities is explained:
Vocabulary: Scalar quantities have only magnitude, while vector quantities have both magnitude and direction.
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.9/5
App Store
4.8/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
Physics Fun: Easy Basics of Forces, Vector Diagrams, and Upthrust!
jasmine
@jasmine01928472
Understanding vector diagrams in physics is crucial for GCSE students. This guide covers key concepts including forces, moments, levers, gears, fluid pressure, and upthrust. It also explores speed, velocity, distance, and displacement, providing essential knowledge for physics exams.
- Forces are... Show more
Vector Diagrams and Moments
This page delves into vector diagrams in physics and introduces the concepts of moments, levers, and gears.
Vector diagrams, also known as free body diagrams, are essential tools in physics. They show forces, their direction, and their magnitude using arrows of different sizes. Scale vector diagrams are particularly useful when forces act diagonally.
Example: A scale vector diagram can illustrate the effect of more than one force on an object.
The page explains that expressing forces as horizontal and vertical components can help determine the effect of one force on another.
The concept of moments is introduced:
Definition: A moment is the turning effect of an object moving due to a force around a pivot.
An important principle of moments is highlighted:
Highlight: When balanced, clockwise movement is equal to anticlockwise movement.
The page also touches on levers and gears in GCSE Physics, explaining that they can transmit rotational effects of forces, increase the magnitude of a force, or increase the distance a force moves over.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Pressure in Fluids and Upthrust
This page focuses on fluid pressure and upthrust concepts, which are crucial in understanding how objects behave in liquids and gases.
The page begins by defining a fluid as either a liquid or a gas. In fluids, pressure is caused by particles colliding with either an object or the walls of the container.
Highlight: In a column of liquid, pressure is highest at the bottom due to the greater weight of the liquid above.
The density of the liquid also affects pressure, as denser liquids have more particles creating additional weight.
The concept of upthrust is then introduced:
Definition: Upthrust is the upwards force exerted by a fluid on a submerged object.
The page explains the conditions for floating and sinking:
- An object floats when its weight equals the upthrust
- An object sinks when its weight is greater than the upthrust
Archimedes' Principle is also explained:
Definition: The upthrust exerted on a body immersed in fluid equals the weight of the fluid the body displaces.
This principle helps explain why dense objects sink while less dense objects float. Dense objects do not displace enough fluid to equal their weight, so they sink, and vice versa.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Speed, Velocity, Distance, and Displacement
This page covers the fundamental concepts of speed, velocity, distance, and displacement, which are essential for understanding motion in physics.
The page begins by differentiating between speed and velocity:
Definition: Speed is how fast an object is travelling , while velocity is the speed of an object in a given direction .
It's noted that when travelling in a straight line with constant speed, an object will have a constant velocity. However, when travelling in a circle, velocity is constantly changing, resulting in acceleration.
Example: An object orbiting a planet has a constantly changing velocity, even if its speed remains constant.
The page also explains that when turning a corner, speed may stay the same, but velocity changes due to the change in direction.
Next, the concepts of distance and displacement are introduced:
Definition: Distance is how far an object moves , while displacement is how far an object moved and in what direction .
The page briefly mentions the concept of resultant force, which occurs when more than one force acts on an object. This ties back to the earlier discussion on vector diagrams.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Distance-Time Graphs and Elasticity
This final page covers two important topics in physics: distance-time graphs and elasticity.
Distance-time graphs are powerful tools for analyzing motion. The page explains that:
Highlight: Speed can be found from the gradient of a distance-time graph.
If an object is accelerating, the graph will be a curve. In this case, the speed at any point can be found by calculating the gradient of the tangent to the curve at that point.
The second half of the page focuses on elasticity. It explains that to change an object's shape, more than one force must be applied.
Definition: An object is elastically deformed if it returns to its original shape when forces are removed. If it doesn't return to its original shape, it's inelastically deformed.
The relationship between extension and force is described:
Highlight: The extension of an object is proportional to the force applied, up to a certain point called the limit of proportionality.
The page introduces the concept of spring constant, which indicates how easily a spring can be stretched or compressed. It also explains that stretching or compressing a spring stores elastic potential energy.
Finally, the page notes that the work done before the limit of proportionality is reached can be calculated, though the specific formula is not provided in this summary.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The Basics of Forces and Work
This page introduces fundamental concepts in physics, focusing on forces and work.
Forces are vector quantities, meaning they have both magnitude and direction. They can be categorized into contact forces and non-contact forces . Forces occur when objects interact with each other.
Gravity is a crucial force in physics. It is a force of attraction between all masses. The page explains the difference between mass and weight:
Definition: Mass is the amount of matter in an object, while weight is the force acting on an object due to gravity.
The weight of an object depends on the gravitational field strength and is directly proportional to its mass.
The concept of work done is also introduced:
Definition: Work done is the amount of energy needed to move an object a distance.
The page notes that 1 Joule equals 1 Newton.
Finally, the difference between scalar and vector quantities is explained:
Vocabulary: Scalar quantities have only magnitude, while vector quantities have both magnitude and direction.
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.9/5
App Store
4.8/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user