9th Class Physics Chapter 3 online Short Questions preparation with Answers

9th Class Physics Chapter 3 Online Preparation

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Online Short Questions For Chapter 3 "9th Class Physics English Medium Chapter 3 Preparation "

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Physics (New Book) - 9th Class Physics English Medium Chapter 3 Preparation

Question # 1

What is meant by limiting friction

Ans 1: Limiting Friction: The maximum value of friction is know as the force of limiting friction
Ans 2: Symbol: Limiting friction denoted by fs
Ans 3: Dependce It depends on the normal reaction (pressing) force between the two surface in contact
Ans 4: Example: The value of limiting friction between glass and glass is 0.9

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Prepare Complete Set Wise Questions For Chapter 3 "9th Class Physics English Medium Chapter 3 Preparation "

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Set 2

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Set 3

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Set 4

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Set 5

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Set 6

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Set 7

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Set 8

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Set 9

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Set 10

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9th Class Physics English Medium Chapter 3 Preparation - Set 1

Question # 1

What is meant by limiting friction

Ans 1: Limiting Friction: The maximum value of friction is know as the force of limiting friction
Ans 2: Symbol: Limiting friction denoted by fs
Ans 3: Dependce It depends on the normal reaction (pressing) force between the two surface in contact
Ans 4: Example: The value of limiting friction between glass and glass is 0.9

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9th Class Physics English Medium Chapter 3 Preparation - Set 2

Question # 1

Why spinner of washing machine is made to spin at very high speed

Ans 1: Because when it spins at high speed the water from wet clothes is forces out through hole due to lack of centripetal force.

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

Question # 1

What is meant by rolling friction?

Ans 1: The force of friction between a rolling body and a surface over which it rolls is called rolling friction.

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

Question # 1

Define centripetal force and give formula

Ans 1: Centripetal force is a force that keeps a body to move in a circle.

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9th Class Physics English Medium Chapter 3 Preparation - Set 5

Question # 1

Write two method of reducing friction.

Ans 1: Making the sliding surfaces smooth By converting sliding friction into rolling friction.

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9th Class Physics English Medium Chapter 3 Preparation - Set 6

Question # 1

What is the law of inertia?

Ans 1: Since Newton's first law of motion deals with the inertial property of matter, there fore ,Newton's first law of motion is also known as law of inertia stated as. A body continues its state of rest or of uniform motion in a straight line provided no net force asct on it.

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9th Class Physics English Medium Chapter 3 Preparation - Set 7

Question # 1

What will be the tension in a rope pulled from its ends by two opposite force 100N each

Ans 1: It will be 100N because string is in equilibrium so applied force and reaction force of string of string that is tension are equal.

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9th Class Physics English Medium Chapter 3 Preparation - Set 8

Question # 1

Why is the law of conservation of momentum important

Ans 1: Rockets and jet engines also work on the same principle. With the help of law of conservation of momentum it is possible to calculate force, velocity, acceleration of a body. Many elementary particles are discovered by using law of conservation of momentum.

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

Question # 1

Define friction.

Ans 1: The force that opposes the motion of moving object is called friction.

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9th Class Physics English Medium Chapter 3 Preparation - Set 10

Question # 1

What would happen if all friction disappears

Ans 1: If all friction disappears, there will be no existence of life.

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3rd Unit

9th class Physics Chapter 3 (English Medium)

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Matric Part 1/9th Class Physics Chapter 3 Short Question Test With Answer for Unit 3 Dynamics

9th Class English Medium Subjects

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Online Short Questions For Chapter 3 "9th Class Physics English Medium Chapter 3 Preparation "

Physics (New Book) - 9th Class Physics English Medium Chapter 3 Preparation

What is meant by limiting friction

Define Banking of roads.

What is an Atwood machine

Stretch out your palm and hold a book on it. How much force you neend to prevent the book from falling

Difference between Mass or Weight.

Why rolling friction is less than sliding friction

Describe two situations in which force of friction is needed

A horse pushes the cart. If the action and reaction are equal and opposites,then how does the cart move?

What is action in above example

What would happen if all friction disappears

Prepare Complete Set Wise Questions For Chapter 3 "9th Class Physics English Medium Chapter 3 Preparation "

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

Set 7

Set 8

Set 9

Set 10

9th Class Physics English Medium Chapter 3 Preparation - Set 1

What is meant by limiting friction

Define Banking of roads.

What is an Atwood machine

Stretch out your palm and hold a book on it. How much force you neend to prevent the book from falling

Difference between Mass or Weight.

Why rolling friction is less than sliding friction

Describe two situations in which force of friction is needed

A horse pushes the cart. If the action and reaction are equal and opposites,then how does the cart move?

What is action in above example

What would happen if all friction disappears

9th Class Physics English Medium Chapter 3 Preparation - Set 2

Why spinner of washing machine is made to spin at very high speed

Difference between kinematics and Dynamic?

Define unit of force.

State first law of motion.

What is isolated system.

Difference between Mass and Weight?

What is different between

What is action in above example

Define weight and write its unit

Action and reaction are always equal and oposite then how does a body move

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

What is meant by rolling friction?

What is meant by dynamics?

Define inertia. Describe two of inertia.

Stretch out your palm and hold a book on it. How much force you neend to prevent the book from falling

What is meant by Force of Limiting Friction symbol

What are the factor on which friction depends?

Define Circular motion:

Differentiate between sliding friction and rolling friction.

Define centripetal force and centrifugal force.

To weight of a body 147N. What its mass

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

Define centripetal force and give formula

Action and reaction are always equal and oposite then how does a body move

What is meant by rolling friction?

Describe braking and skidding

Calculate the value of force acting on a body of mass 4kg and produces and acceleration of 2ms

What is inertia

Define newton's second law of motion and give equation

A horse pushes the cart It the action and reaction are equal and opposite then how does the cart move.

What is action in above example

How cream separator work

9th Class Physics English Medium Chapter 3 Preparation - Set 5

Write two method of reducing friction.

Define centripetal force and centrifugal force.

A force of 20N moves a body with an acceleration of 2ms-²What is tits mass?