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Three point masses lie at the corners at...

Three point masses lie at the corners at an equilateral triangle of side l . Their separation do not change when the system rotate about the centre of the triangle . For this the time period of rotation must be proportional to

A

`l^(3/2)`

B

a

C

m

D

`m^(-1/2)

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The correct Answer is:
A, D
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