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A rigid body rotates with an angular mom...

A rigid body rotates with an angular momentum L. If its kinetic energy is halved, the angular momentum becomes,

A

L

B

`(L)/(2)`

C

2L

D

`(1)/(sqrt(2))`

Text Solution

Verified by Experts

The correct Answer is:
D
If the kinetic energy is halved `(E_(k))=(E_(k))/(2)`
New angular momentum, `L. = sqrt(2mE_(k))=sqrt((2mE_(k))/(2))rArrL. = (L)/(sqrt(2))`
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