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A spere is suspended by a thread of leng...

A spere is suspended by a thread of length l. What minimum horizontal velocity has to be imparted to 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

At point A all of the K.E transformed into the potential energy
`1/2mv^2=mgl`
`v=sqrt(2gl)`
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