Physics English Medium 9th Class Chapter 4 Turning Effect of Forces Short Question with Answers

9th Class Physics Chapter 4 Online Preparation

Start Physics Unit 4 Preparation

9th Class English Medium Subjects

9th Class Urdu Medium Subjects

Online Short Questions For Chapter 4 "9th Class Physics English Medium Chapter 4 Preparation "

Try The Short Questions For 9th Class Physics English Medium Chapter 4 Preparation

Total Questions10
Available Sets12

Start Test Download PDF

Physics (New Book) - 9th Class Physics English Medium Chapter 4 Preparation

Question # 1

Define rigid body and give an example

Ans 1: Rigid Body: A body is composed of large number of particles. It the distance between all pairs of particles of the body do not change by applying a force, then it is called a rigid body
Ans 2: Example: A door, A cylinder

Submit

Prepare Complete Set Wise Questions For Chapter 4 "9th Class Physics English Medium Chapter 4 Preparation "

Set 1

10 Questions
Start
Set 2

10 Questions
Start
Set 3

10 Questions
Start
Set 4

10 Questions
Start
Set 5

10 Questions
Start
Set 6

10 Questions
Start
Set 7

10 Questions
Start
Set 8

10 Questions
Start
Set 9

10 Questions
Start
Set 10

10 Questions
Start
Set 11

10 Questions
Start
Set 12

10 Questions
Start

9th Class Physics English Medium Chapter 4 Preparation - Set 1

Question # 1

Define rigid body and give an example

Ans 1: Rigid Body: A body is composed of large number of particles. It the distance between all pairs of particles of the body do not change by applying a force, then it is called a rigid body
Ans 2: Example: A door, A cylinder

Submit

9th Class Physics English Medium Chapter 4 Preparation - Set 2

Question # 1

At which point an applied force does not produce rotation

Ans 1: A force applied at the centre of mass of a body does not produce any rotation rather the body moves in the direction of applied force

Submit

9th Class Physics English Medium Chapter 4 Preparation - Set 3

Question # 1

How can we increase the stability of a vehicle

Ans 1: Stability of the vehicle can be increased by lowering the centre of mass of vehicle and by making them heavy at the bottom.

Submit

9th Class Physics English Medium Chapter 4 Preparation - Set 4

Question # 1

A ladder leaning at a wall as shown in figure is in equilibrium how

Ans 1: The weight of ladder produces anticlock wise torque. The wall pushes the ladder at its tope end thus produce a clockwise torque. Both torques are equal and opposite and cancel their effect. So, the ladder is in state of equilibrium.

Submit

9th Class Physics English Medium Chapter 4 Preparation - Set 5

Question # 1

How a force can be resolved into its prependicular components

Ans 1: To resolve a force into its perpendicular components we neend head to tail rule. It the given forces is considered as resultant force then the two components can be drawn In the figure force F is making an angle 0 with horizontal surface and it is resolved into Fx and Fy which are horizontal and vertical components respectively.

Submit

9th Class Physics English Medium Chapter 4 Preparation - Set 6

Question # 1

In a right angled triangle length of base is 4cm and its perpendicular is 3cm.

Ans 1: length of its hypotenuse, cos , sin, tan,

Submit

9th Class Physics English Medium Chapter 4 Preparation - Set 7

Question # 1

On which factor torque depends

Ans 1: So, torque depends upon force and moment arm

Submit

9th Class Physics English Medium Chapter 4 Preparation - Set 8

Question # 1

Define couple arm

Ans 1: The perpendicular distance between two force of couple is called couple arm

Submit

9th Class Physics English Medium Chapter 4 Preparation - Set 9

Question # 1

A force of 150 N is making an angle of 40 with horizontal surface what is its vertical components.

Ans 1: Given data: Give data F= 15N
0=40
Ans 2: Required Fy

Submit

9th Class Physics English Medium Chapter 4 Preparation - Set 10

Question # 1

When a body is said to be in equilibrium

Ans 1: A body is said to be in equilibrium if no net force acts on it.

Submit

9th Class Physics English Medium Chapter 4 Preparation - Set 11

Question # 1

Differentiate between clockwise and anti-clockwise moment

Ans 1: Clockwise Moment: The force that trrns a spanner in the clockwise direction is known is clockwise force. The torque or moment of force produced to this force is called clockwise moment
The moment produced during tighten a nut
Ans 2: Anti-Clockwise moment: The force that turns a spanner in the anticlockwise direction is called known as anticlockwise force. The torque or moment of force is called anticlockwise moment
The moment produced during loosing a nut

Submit

9th Class Physics English Medium Chapter 4 Preparation - Set 12

Question # 1

What is meant by graph

Ans 1: A graph is a diagram showing the relationship between variable quantities typically of two variables, each measured along a pair of axis at right angle.

Submit

Physics

4th Unit

9th class Physics Chapter 4 (English Medium)

Here you can prepare 9th Physics Chapter 4 online Short Questions Preparation (Turning Effect of Forces). Click the button for 100% free full Preparation.

Start Unit 4 Preparation

Unit 1

Unit 2

Unit 3

Unit 4

Unit 5

Unit 6

Unit 7

Unit 8

Unit 9

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

Matric Part 1/9th Class Physics Chapter 4 Short Question Test With Answer for Unit 4 Turning Effect of Forces

9th Class English Medium Subjects

9th Class Urdu Medium Subjects

Online Short Questions For Chapter 4 "9th Class Physics English Medium Chapter 4 Preparation "

Physics (New Book) - 9th Class Physics English Medium Chapter 4 Preparation

Define rigid body and give an example

Define unstable equilibrium

What is meant by principle of moments

When a body is said to be in equilibrium

Why the height of a vehicle is kept as low as possible

What is meant by graph

On which factor torque depends

The weight of the ladder in fig produces an anticlock wise toruqe

Unit of torque.

Define equilibrium. and give one example.

Prepare Complete Set Wise Questions For Chapter 4 "9th Class Physics English Medium Chapter 4 Preparation "

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

Set 7

Set 8

Set 9

Set 10

Set 11

Set 12

9th Class Physics English Medium Chapter 4 Preparation - Set 1

Define rigid body and give an example

Define unstable equilibrium

What is meant by principle of moments

When a body is said to be in equilibrium

Why the height of a vehicle is kept as low as possible

What is meant by graph

On which factor torque depends

The weight of the ladder in fig produces an anticlock wise toruqe

Unit of torque.

Define equilibrium. and give one example.

9th Class Physics English Medium Chapter 4 Preparation - Set 2

At which point an applied force does not produce rotation

Write the principle of moments

Does the speed of a ceiling fan go on increasing all the time.

Why a body cannot be in equilibrium due to a single force acting on it

Discuss centre of gravity of some symmetrical object

What is hypotenuse

Define unstable equilibrium. Give one example

Think of a body which is at test but not in equilibrium

Give an example of a moving body which is in equilibrium?

What is centre of gravity

9th Class Physics English Medium Chapter 4 Preparation - Set 3

How can we increase the stability of a vehicle

Define plumb line?

What is stat of neutral equilibrium.

Define Resolution of forces

What is line of action of force.

Define Resultant vector?

Why door is easy to open or close by pushing or pulling at handle?

At which point an applied force does not produce rotation

Define unlike parallel forces.

Can force be added by ordinary addition of number

9th Class Physics English Medium Chapter 4 Preparation - Set 4

A ladder leaning at a wall as shown in figure is in equilibrium how

Differentiate between Axis of rotation and Mometn

Define trigonometry

When a body is said to be in equilibrium?

On doubling the moment arm, what will be its effect on the value of torque

Why a body regain its previous state in stable equilibrium

What is meant by resolution of forces?

What is line of action of force.

What is centre of gravity

Define Resultant vector?

9th Class Physics English Medium Chapter 4 Preparation - Set 5