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A child is standing with folded hands at...

A child is standing with folded hands at the centre of a platform rotating about its central axis. The K.E of the system is K. The child now stretches his arms so that the M.I of the system doubles. The K.E of the system now is

A

2K

B

K/2

C

4K

D

K/4

Text Solution

Verified by Experts

The correct Answer is:
B
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