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Toy cart tied to the end of an unstretch...

Toy cart tied to the end of an unstretched string of length a, when revolved moves in a horizontal circle of radius 2a with a time period T. Now the toy cart is speeded up until it moves in a horizontal circle of radius 3a with a period T. If Hooke's law (F=kx) holds, then

A

`T'=sqrt(3/2)T`

B

`T'=(sqrt(3)/2)T`

C

`T'=(3/2)T`

D

`T'=T`

Text Solution

Verified by Experts

The correct Answer is:
A
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