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A ballet dancer spins about vertical axi...

A ballet dancer spins about vertical axis at 60 rpm with his arms closed Now he stretches his arms such that M.I. increases by `50%` the new speed of revolution is

A

80 rpm

B

40 rpm

C

90 rpm

D

30 rpm

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Verified by Experts

The correct Answer is:
B
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AAKASH SERIES-ROTATIONAL DYNAMICS -PRACTICE SHEET (Exercise - III) ( LEVEL - I Straight Objective Type Questions)
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