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If the angular momentum of a rotating bo...

If the angular momentum of a rotating body about an axis is increased by 10%. Its kinetic energy increases by

A

0.2

B

0.21

C

0.1

D

-0.21

Text Solution

Verified by Experts

The correct Answer is:
B
`E = (L^(2))/(2I) rArr (E_(2) - E_(1))/(E_(1)) xx100 = (L_(2)^(2) - L_(1)^(2))/(L_(1)^(2)) xx100 `
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NARAYNA-SYSTEM OF PARTICLES AND ROTATIONAL MOTION -EXERCISE - II (C.W)
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