Home
Class 11
PHYSICS
A horizonral circular plate is rotating ...

A horizonral circular plate is rotating about a vertical axis passing through its centre with an angular velocity `omega_(0)`. A man sitting at the centre having two blocks in his hands stretches out his hands so that the moment of inertia of the system doubles. If the kinetic energy of the system is `K` intially, its final kinetic energy will be

A

2 K

B

`K//2`

C

K

D

`K//4`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

A horizontal circular plate is rotating about a vertical exis passing through its centre with an angular velocity omega_0 . A man sitting at the centre having two blocks in his hands stretches out his hands so that the moment of inertia of the system doubles. if the kinetic energy oif the system is K initially, its final kinetic energy will be

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

A horizontal disc is rotating about a vertical axis passing through its centre. If an insect moves from centre to rim then the angular momentum of the system

A horizontal disc is rotating about a vertical axis passing through its centre. If an insect moves from centre to rim then the angular momentum of the system

A child is standing with folded hands at the center of a platform rotating about its central axis. The kinetic energy of the system is K . The child now stretches his arms so that the moment of inertia of the system doubles. The kinetic energy of the system now is

A child is standing with folded hands at the center of a platform rotating about its central axis. The kinetic energy of the system is K . The child now strectches his arms so that the moment of inertia of the system doubles. The kinetic energy of the system now is.

An ice block is in a trough which is rotating about vertical axis passing through its centre. When ice melts completely, the angular velocity of the system

A spherical solid ball of 1 kg mass and radius 3 cm is rotating about an axis passing through its centre with an angular velocity of 50 rad s^(-1) . The kinetic energy of rotation is