Home
Class 12
PHYSICS
A rigid body of mass m rotates about an ...

A rigid body of mass m rotates about an axis passing through its centre. If the angular velocity of the body is unity, the moment of inertia of the body will be equal to

A

kinetic energy of the body

B

twice the kinetic energy of the body

C

angular momentum of the body

D

twice the angular momentum of the body

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

A solid sphere of radius r and mass m rotates about an axis passing through its centre with angular velocity omega . Its K.E . Is

Moment Of Inertia Of Rigid Body

If the angular velocity of a rotating rigid body is increased then its moment of inertia about that axis

The angular velocity of a rigid body about any point of that body is same :

In the given figure F=10N, R=1m , mass of the body is 2kg and moment of inertia of the body about an axis passing through O and perpendicular to the plane of the body is 4kgm^(2) . O is the centre of mass of the body. If the ground is smooth, what is the total kinetic energy of the body after 2s ?

Moment of inertia of a rigid body about an axis passing through its centre of mass is I_(0) and moment of inertia of the same body about another axis parallel to the first axis is I. Then

The moment of inertia of a copper disc, rotating about an axis passing through its centre and perpendicular to its plane

A rigid body is rotating about a vertical axis. In t second, the axis gradually becomes horizontal. But the rigid body continues to make v rotations per second throughout the time interval of 1 second. If the moment of inertia I of the body about the axis of rotation can he taken as constant, then the torque acting on the body is

A rigid body is rotating about a vertical axis at n rotations per minute, If the axis slowly becomes horizontal in t seconds and the body keeps on rotating at n rotations per minute then the torque acting on the body will be, if the moment of inertia of the body about axis of rotation is I.