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?

`sqrt("5 gl")`

2 gl

`sqrt(gl)`

`sqrt(2gl)`

Text Solution

Verified by Experts

The correct Answer is:

Kinetic energy given to a sphere at lowest point = potential energy at the hieght of suspension

`rArr" "(1)/(2)mv^(2)=mgl`
`therefore" "v=sqrt(2gl)`

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