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A child is standing wiith hands at the c...

A child is standing wiith hands at the centre of a platform rotating about its central axis. The kinetie energy of the system K. The chilid now seretches his arms so that of the kinetic energy of the system is now.

A

`K/4`

B

`K/2`

C

2K

D

4K

Text Solution

Verified by Experts

The correct Answer is:
B
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TARGET PUBLICATION-MODEL QUESTION PAPER -MODEL QUESTION PAPER -II
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