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A sphere is suspended by a thread of len...

A sphere is suspended by a thread of length l. What minimum horizontal velocity has to be imparted the ball for it to reach the height of the suspension?

A

`gl`

B

`2gl`

C

`sqrt(gl)`

D

`sqrt(2gl)`

Text Solution

Verified by Experts

The correct Answer is:
D
KE given to a sphere at lowest point
=PE at the height of suspension
`1/2mv^2=mgl`
`rArr " "v=sqrt(2gl)`
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