11th Physics Weekly Test - 4 ( Motion of System of Particles and Rigid Bodies )

MABS Institution

11th Physics Weekly Test - 4 ( Motion of System of Particles and Rigid Bodies )-Aug 2020

Time : 1.30 Hours

Part - A

Generic 3 - Answer All Question

Give any two examples of torque in day-today life.

Give the physical significance of moment of inertia. Explain the need of fly wheel in Engine.

A jester in a circus is standing with his arms extended on a turn table rotating with angular velocity \(\omega\). He brings his arms closer to his body so that his moment of inertia is reduced to one third of the original value. Find his new angular velocity. [Given: There is no external torque on:the turn table in the given situation.]

On what factors does radius of gyration of body depend?

State conservation of angular momentum

What do you understand by the term 'Precession'? Give an example.

What is radius of gyration?

Write an expression for Cartesian co-ordinates of the CM for uniform distribution of mass.

Mention any two physical significance of moment of inertia

A rolling wheel has velocity of its center of mass as 5 m s^-1. If its radius is 1.5 m and angular velocity is 3 rad s^-1 , then check whether it is in pure rolling or not.

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11th Physics Weekly Test - 4 ( Motion of System of Particles and Rigid Bodies )

MABS Institution

11th Physics Weekly Test - 4 ( Motion of System of Particles and Rigid Bodies )-Aug 2020

Part - A

Generic 3 - Answer All Question

Give any two examples of torque in day-today life.

Give the physical significance of moment of inertia. Explain the need of fly wheel in Engine.

On what factors does radius of gyration of body depend?

State conservation of angular momentum

What do you understand by the term 'Precession'? Give an example.

What is radius of gyration?

Write an expression for Cartesian co-ordinates of the CM for uniform distribution of mass.

Mention any two physical significance of moment of inertia

A rolling wheel has velocity of its center of mass as 5 m s-1. If its radius is 1.5 m and angular velocity is 3 rad s-1 , then check whether it is in pure rolling or not.

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A rolling wheel has velocity of its center of mass as 5 m s^-1. If its radius is 1.5 m and angular velocity is 3 rad s^-1 , then check whether it is in pure rolling or not.