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Question

When a ball is thrown up vertically with velocity vo it reaches a maximum height of h. If one wishes to triple the maximum heigh them the ball should be thrown with velocity :

Options

A.√3 vo
B.3 vo
C.9 vo
D.3/2 vo

Solution

mv02 = mgh         .......(i)
mv2 = mg × 3h         .......(ii)
Dividing = 3; v2 = 3v02
⇒   v = √3v0

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