Beta Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>BEGINNER'S BOX - 6>Q 1

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The moment of inertia of a wheel about its axis of rotation is $3.0 MKS$ units. Its kinetic energy is $600 J$ . Find its period of rotation.

Important Questions on Rotational Mechanics

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Beta Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>BEGINNER'S BOX - 6>Q 2

The moment of inertia of a wheel is

1000 kg m^{2}

. At a given instant, its angular velocity is

10 rad s^{- 1}

. After the wheel rotates through an angle of

100 rad

, its angular velocity increases to

100 rad s^{- 1}

. Calculate the torque applied on the wheel.

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Beta Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>BEGINNER'S BOX - 6>Q 3

The moment of inertia of a wheel is

1000 kg m^{2}

. At a given instant, its angular velocity is

10 rad s^{- 1}

. After the wheel rotates through an angle of

100 rad

, its angular velocity increases to

100 rad s^{- 1}

. Calculate the torque applied on the wheel.

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Beta Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>BEGINNER'S BOX - 6>Q 4

A ring, a disc and a solid sphere are simultaneously released to roll down from the top of a rough inclined plane of height

h

. Write the order in which these three bodies will reach the bottom?

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Beta Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>BEGINNER'S BOX - 6>Q 5

A hollow cylinder is rolling down an inclined plane which is inclined at an angle of

30^{\circ}

to the horizontal. Find its speed after travelling a distance of

10 m

.

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Beta Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>Exercise (Conceptual Questions)>Q 1

Essential characteristic of equilibrium is

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Beta Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>Exercise (Conceptual Questions)>Q 2

If the equation for the displacement of a particle moving in a circular path is given by,

(θ) = 2 t^{3} + 0.5

, where

θ

is in radians and

t

in seconds, then the angular velocity of the particle after

2 s

from its start is

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Beta Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>Exercise (Conceptual Questions)>Q 3

Two particles having masses

M

and

m

are moving in a circular path having radius

R

and

r .

If their time periods are same, then ratio of angular velocity will be

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Beta Question Bank for Medical: Physics>Chapter 10 - Rotational Mechanics>Exercise (Conceptual Questions)>Q 4

Angular velocity of minute hand of a clock is: