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?

g l

2 g l

`sqrt gl`

`sqrt 2 g l`

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Verified by Experts

The correct Answer is:

Kinetic energy given to a sphere at lowest point= Potential energy at the height of suspension,
`therefore (1)/(2) mv^(2)mgl" "therefore v=sqrt(2gl)`.

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