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A turn table is rotating in horizontal p...

A turn table is rotating in horizontal plane about its own axis at an angular velocity `90rpm` while a person is on the turn table at its edge. If he gently walks to the centre of table by which moment of inertia of system decreases by `25%`, then the time period of rotating of turn table is

A

`0.5 sec`

B

`1 sec`

C

`1.5 sec`

D

`2 sec`

Text Solution

Verified by Experts

The correct Answer is:
A
`I_(1)omega_(1)=I_(2)omega_(2), I_(1)=100,I_(2)=100-25=75`
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Knowledge Check

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