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Newton's 2nd Law of Motion and Fun Physics Experiments for Class 9 and 11

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Newton's 2nd Law of Motion and Fun Physics Experiments for Class 9 and 11
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Emma Corden

@emmacorden_rpll

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28 Followers

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Newton's Second Law of Motion and Fluid Mechanics: A Comprehensive Guide

This guide covers key concepts in physics, including Newton's 2nd law of motion, forces, free body diagrams, motion in fluids, moments, and pressure. It provides detailed explanations, examples, and practical investigations to help students understand these fundamental principles.

1/5/2023

249

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

Forces in Action: Newton's Second Law

This page introduces Newton's second law of motion, which states that the net force acting on an object is equal to its mass multiplied by its acceleration (F = ma).

Key points:

  • One newton is defined as the force required to accelerate a 1 kg mass by 1 m/s².
  • Various forces are discussed, including weight, upthrust, friction, and normal forces.

Definition: Newton's second law of motion states that F = ma, where F is the net force, m is mass, and a is acceleration.

Example: For a constant mass, if two forces of 2N upward and 1N downward are applied, the net force is 1N upward.

Vocabulary: Normal force is the force exerted by a surface on an object in contact with it, always perpendicular to the surface.

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

View

The Principle of Moments and Force Couples

This page explains the principle of moments and introduces force couples and torques.

Key concepts:

  • An object is in equilibrium when there is no net force acting on it and the sum of clockwise moments equals the sum of anticlockwise moments.
  • Force couples consist of two equal and opposite forces acting in the same plane.

Definition: The principle of moments states that for an object in equilibrium, the sum of clockwise moments equals the sum of anticlockwise moments.

Vocabulary: A force couple consists of two equal and opposite forces acting in the same plane, creating a pure rotational effect.

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

View

Additional Moment Problems and Solutions

This page continues with more practice problems on moments and their detailed solutions.

Key points:

  • A comprehensive problem involving a balanced beam is solved step-by-step.
  • The principle of moments is restated and applied to find unknown weights and masses.

Example: In a balanced beam problem, the unknown weight is calculated to be 164 N, corresponding to a mass of 16.7 kg.

Highlight: When solving equilibrium problems, always equate the sum of clockwise moments to the sum of anticlockwise moments.

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

View

Moments and Force Analysis

This page introduces the concept of moments and provides examples of force analysis using trigonometry.

Key points:

  • A moment is the product of force and the perpendicular distance from the pivot to the line of action of the force.
  • The unit of moment is Newton-meter (Nm).

Definition: A moment is the turning effect of a force, calculated as the product of the force and the perpendicular distance from the pivot to the line of action of the force.

Example: For a force of 6N applied 0.1m from a pivot, the moment is 0.5 Nm.

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

View

Pressure in Fluids and Archimedes' Principle

This page covers pressure in fluids and introduces Archimedes' Principle.

Key points:

  • Pressure in a fluid is calculated as P = F/A = mg/A = ρgh
  • Archimedes' Principle states that the upthrust on a submerged object equals the weight of fluid displaced.

Definition: Archimedes' Principle states that the upthrust acting on a body submerged in a liquid is equal to the weight of the liquid that has been displaced.

Formula: Pressure in a fluid is given by P = ρgh, where ρ is density, g is gravitational acceleration, and h is depth.

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

View

Free Body Diagrams and Force Analysis

This page covers free body diagrams and provides examples of force analysis in various scenarios.

Key concepts:

  • Free body diagrams use dots to represent objects and arrows to show forces.
  • A detailed example of a helicopter lifting a mass is provided, demonstrating force calculations in different situations.

Highlight: When drawing free body diagrams, always use arrows to scale and a dot to represent the object.

Example: In the helicopter example, when the load experiences acceleration, the tension in the cable increases from 981N to 1081N.

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

View

Practical Investigation of Motion in Fluid

This page describes a practical investigation of motion in fluid and introduces forces on a slope.

Key points:

  • The practical investigation involves dropping a ball bearing through a viscous fluid and measuring its motion.
  • Forces on a slope are broken down into components parallel and perpendicular to the plane.

Vocabulary: Terminal velocity is the constant speed reached by an object falling through a fluid when the drag force equals the gravitational force.

Definition: The center of gravity is the point at which the entire weight of an object seems to act.

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

View

Moments Practice Questions

This page provides practice questions on moments and their solutions.

Key points:

  • Detailed solutions for moment calculations are provided, including trigonometric analysis.
  • The principle of moments is applied to solve equilibrium problems.

Example: For a force of 5N applied at a 30° angle to a 0.2m lever arm, the moment is calculated as 5 × 0.1 = 0.5 Nm.

Highlight: When solving moment problems, always identify the perpendicular distance from the pivot to the line of action of the force.

Can't find what you're looking for? Explore other subjects.

Knowunity is the # 1 ranked education app in five European countries

Knowunity was a featured story by Apple and has consistently topped the app store charts within the education category in Germany, Italy, Poland, Switzerland and United Kingdom. Join Knowunity today and help millions of students around the world.

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Knowunity is the # 1 ranked education app in five European countries

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Stefan S, iOS User

The application is very simple and well designed. So far I have found what I was looking for :D

SuSSan, iOS User

Love this App ❤️, I use it basically all the time whenever I'm studying

Can't find what you're looking for? Explore other subjects.

Knowunity is the # 1 ranked education app in five European countries

Knowunity was a featured story by Apple and has consistently topped the app store charts within the education category in Germany, Italy, Poland, Switzerland and United Kingdom. Join Knowunity today and help millions of students around the world.

Ranked #1 Education App

Download in

Google Play

Download in

App Store

Knowunity is the # 1 ranked education app in five European countries

4.9+

Average App Rating

13 M

Students use Knowunity

#1

In Education App Charts in 12 Countries

950 K+

Students uploaded study notes

Still not sure? Look at what your fellow peers are saying...

iOS User

I love this app so much [...] I recommend Knowunity to everyone!!! I went from a C to an A with it :D

Stefan S, iOS User

The application is very simple and well designed. So far I have found what I was looking for :D

SuSSan, iOS User

Love this App ❤️, I use it basically all the time whenever I'm studying

Newton's 2nd Law of Motion and Fun Physics Experiments for Class 9 and 11

user profile picture

Emma Corden

@emmacorden_rpll

·

28 Followers

Follow

Newton's Second Law of Motion and Fluid Mechanics: A Comprehensive Guide

This guide covers key concepts in physics, including Newton's 2nd law of motion, forces, free body diagrams, motion in fluids, moments, and pressure. It provides detailed explanations, examples, and practical investigations to help students understand these fundamental principles.

1/5/2023

249

 

12

 

Physics

12

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

Sign up to see the content. It's free!

Access to all documents

Join milions of students

Improve your grades

By signing up you accept Terms of Service and Privacy Policy

Forces in Action: Newton's Second Law

This page introduces Newton's second law of motion, which states that the net force acting on an object is equal to its mass multiplied by its acceleration (F = ma).

Key points:

  • One newton is defined as the force required to accelerate a 1 kg mass by 1 m/s².
  • Various forces are discussed, including weight, upthrust, friction, and normal forces.

Definition: Newton's second law of motion states that F = ma, where F is the net force, m is mass, and a is acceleration.

Example: For a constant mass, if two forces of 2N upward and 1N downward are applied, the net force is 1N upward.

Vocabulary: Normal force is the force exerted by a surface on an object in contact with it, always perpendicular to the surface.

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

Sign up to see the content. It's free!

Access to all documents

Join milions of students

Improve your grades

By signing up you accept Terms of Service and Privacy Policy

The Principle of Moments and Force Couples

This page explains the principle of moments and introduces force couples and torques.

Key concepts:

  • An object is in equilibrium when there is no net force acting on it and the sum of clockwise moments equals the sum of anticlockwise moments.
  • Force couples consist of two equal and opposite forces acting in the same plane.

Definition: The principle of moments states that for an object in equilibrium, the sum of clockwise moments equals the sum of anticlockwise moments.

Vocabulary: A force couple consists of two equal and opposite forces acting in the same plane, creating a pure rotational effect.

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

Sign up to see the content. It's free!

Access to all documents

Join milions of students

Improve your grades

By signing up you accept Terms of Service and Privacy Policy

Additional Moment Problems and Solutions

This page continues with more practice problems on moments and their detailed solutions.

Key points:

  • A comprehensive problem involving a balanced beam is solved step-by-step.
  • The principle of moments is restated and applied to find unknown weights and masses.

Example: In a balanced beam problem, the unknown weight is calculated to be 164 N, corresponding to a mass of 16.7 kg.

Highlight: When solving equilibrium problems, always equate the sum of clockwise moments to the sum of anticlockwise moments.

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

Sign up to see the content. It's free!

Access to all documents

Join milions of students

Improve your grades

By signing up you accept Terms of Service and Privacy Policy

Moments and Force Analysis

This page introduces the concept of moments and provides examples of force analysis using trigonometry.

Key points:

  • A moment is the product of force and the perpendicular distance from the pivot to the line of action of the force.
  • The unit of moment is Newton-meter (Nm).

Definition: A moment is the turning effect of a force, calculated as the product of the force and the perpendicular distance from the pivot to the line of action of the force.

Example: For a force of 6N applied 0.1m from a pivot, the moment is 0.5 Nm.

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

Sign up to see the content. It's free!

Access to all documents

Join milions of students

Improve your grades

By signing up you accept Terms of Service and Privacy Policy

Pressure in Fluids and Archimedes' Principle

This page covers pressure in fluids and introduces Archimedes' Principle.

Key points:

  • Pressure in a fluid is calculated as P = F/A = mg/A = ρgh
  • Archimedes' Principle states that the upthrust on a submerged object equals the weight of fluid displaced.

Definition: Archimedes' Principle states that the upthrust acting on a body submerged in a liquid is equal to the weight of the liquid that has been displaced.

Formula: Pressure in a fluid is given by P = ρgh, where ρ is density, g is gravitational acceleration, and h is depth.

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

Sign up to see the content. It's free!

Access to all documents

Join milions of students

Improve your grades

By signing up you accept Terms of Service and Privacy Policy

Free Body Diagrams and Force Analysis

This page covers free body diagrams and provides examples of force analysis in various scenarios.

Key concepts:

  • Free body diagrams use dots to represent objects and arrows to show forces.
  • A detailed example of a helicopter lifting a mass is provided, demonstrating force calculations in different situations.

Highlight: When drawing free body diagrams, always use arrows to scale and a dot to represent the object.

Example: In the helicopter example, when the load experiences acceleration, the tension in the cable increases from 981N to 1081N.

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

Sign up to see the content. It's free!

Access to all documents

Join milions of students

Improve your grades

By signing up you accept Terms of Service and Privacy Policy

Practical Investigation of Motion in Fluid

This page describes a practical investigation of motion in fluid and introduces forces on a slope.

Key points:

  • The practical investigation involves dropping a ball bearing through a viscous fluid and measuring its motion.
  • Forces on a slope are broken down into components parallel and perpendicular to the plane.

Vocabulary: Terminal velocity is the constant speed reached by an object falling through a fluid when the drag force equals the gravitational force.

Definition: The center of gravity is the point at which the entire weight of an object seems to act.

Physics chapter 4:
Forces in action revision:
Newtons 2nd law:
The net force-mass & acceleration
(For a constant mass,
F = ma
AIN
Fner=2-1=1

Sign up to see the content. It's free!

Access to all documents

Join milions of students

Improve your grades

By signing up you accept Terms of Service and Privacy Policy

Moments Practice Questions

This page provides practice questions on moments and their solutions.

Key points:

  • Detailed solutions for moment calculations are provided, including trigonometric analysis.
  • The principle of moments is applied to solve equilibrium problems.

Example: For a force of 5N applied at a 30° angle to a 0.2m lever arm, the moment is calculated as 5 × 0.1 = 0.5 Nm.

Highlight: When solving moment problems, always identify the perpendicular distance from the pivot to the line of action of the force.

Can't find what you're looking for? Explore other subjects.

Knowunity is the # 1 ranked education app in five European countries

Knowunity was a featured story by Apple and has consistently topped the app store charts within the education category in Germany, Italy, Poland, Switzerland and United Kingdom. Join Knowunity today and help millions of students around the world.

Ranked #1 Education App

Download in

Google Play

Download in

App Store

Knowunity is the # 1 ranked education app in five European countries

4.9+

Average App Rating

13 M

Students use Knowunity

#1

In Education App Charts in 12 Countries

950 K+

Students uploaded study notes

Still not sure? Look at what your fellow peers are saying...

iOS User

I love this app so much [...] I recommend Knowunity to everyone!!! I went from a C to an A with it :D

Stefan S, iOS User

The application is very simple and well designed. So far I have found what I was looking for :D

SuSSan, iOS User

Love this App ❤️, I use it basically all the time whenever I'm studying