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If the angular momentum of any rotating ...

If the angular momentum of any rotating body increases by `200%`, then the increase in its kinetic energy

A

4

B

8

C

2

D

1

Text Solution

Verified by Experts

The correct Answer is:
B
As `E= (L^(2))/(2I) rArr (E_(2))/(E_(1))= ((L_(2))/(L_(1)))^(2)= ((3L_(1))/(L_(1)))^(2)` [As `L_(2)= L_(1) + 200%, L_(2)= 34`]
`rArr E_(2)= 9E_(1)= E_(1) + 800% " of " E_(1)`
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