11th Physics Weekly Test - 2 ( Laws of motion )

MABS Institution

11th Physics Weekly Test - 2 ( Laws of motion )-Aug 2020

Time : 1.30 Hours

Part - A

Generic 2 - Answer All Question

State Aristotelian law of motion. What is flaw in this law.

What are the forces acting on the vehicle when it moves in circulated road?

Explain why the water doesn't fall even at the top of the circle when the bucket full of water is upside down rotating in a vertical circle?

Give examples for action - reaction forces

How does the use of ball bearing reduces friction?

A football player kicks a 0.8 kg ball and imparts it a velocity 12 ms^-1 The contact between the foot and ball is only for one sixtieth of a second. Find the average kicking force.

Bodies of larger mass need greater initial effort to put them in motion. Why?

What do you mean by Inertia of motion? Give one example

An athlete runs a certain distance before taking a long jump. Why?

Write the expression for centripetal force. Give two examples.

Part - B

Generic 5 - Answer All Question

Consider an object of mass 2 kg resting on the floor. The coefficient of static friction between the object and the floor is μ_s = 0.8. What force must be applied on the object to move it?

Two masses m₁ and m₂ m₁ > m₂ or in contact with each other on a smooth horizontal surface. Calculate the magnitude of contact force between them.

A gun weighing 25 kg fires a bullet weighing 30 g with the speed of 200 ms^-1. What is the speed of recoil of the gun.
Derive an expression for the acceleration of the body sliding down a frictionless surface.

Briefly explain the origin of friction. Show that in an inclined plane, angle of friction is equal to angle of repose

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11th Physics Weekly Test - 2 ( Laws of motion )

MABS Institution

11th Physics Weekly Test - 2 ( Laws of motion )-Aug 2020

Part - A

Generic 2 - Answer All Question

State Aristotelian law of motion. What is flaw in this law.

What are the forces acting on the vehicle when it moves in circulated road?

Explain why the water doesn't fall even at the top of the circle when the bucket full of water is upside down rotating in a vertical circle?

Give examples for action - reaction forces

How does the use of ball bearing reduces friction?

A football player kicks a 0.8 kg ball and imparts it a velocity 12 ms-1 The contact between the foot and ball is only for one sixtieth of a second. Find the average kicking force.

Bodies of larger mass need greater initial effort to put them in motion. Why?

What do you mean by Inertia of motion? Give one example

An athlete runs a certain distance before taking a long jump. Why?

Write the expression for centripetal force. Give two examples.

Part - B

Generic 5 - Answer All Question

Consider an object of mass 2 kg resting on the floor. The coefficient of static friction between the object and the floor is μs = 0.8. What force must be applied on the object to move it?

Two masses m1 and m2 m1 > m2 or in contact with each other on a smooth horizontal surface. Calculate the magnitude of contact force between them.

A gun weighing 25 kg fires a bullet weighing 30 g with the speed of 200 ms-1. What is the speed of recoil of the gun.

Derive an expression for the acceleration of the body sliding down a frictionless surface.

Briefly explain the origin of friction. Show that in an inclined plane, angle of friction is equal to angle of repose

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Tamilnadu Stateboardszs - Class

A football player kicks a 0.8 kg ball and imparts it a velocity 12 ms^-1 The contact between the foot and ball is only for one sixtieth of a second. Find the average kicking force.

Consider an object of mass 2 kg resting on the floor. The coefficient of static friction between the object and the floor is μ_s = 0.8. What force must be applied on the object to move it?

Two masses m₁ and m₂ m₁ > m₂ or in contact with each other on a smooth horizontal surface. Calculate the magnitude of contact force between them.

A gun weighing 25 kg fires a bullet weighing 30 g with the speed of 200 ms^-1. What is the speed of recoil of the gun.