Work, Power and EnergyHard
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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