Question

a stone is tied to one end of a light inextensible string of length L and made to rotate on a vertical circle keeping other end of the string at centre if speed of stone at the highest point is v (v>√gl) then its speed at the lowest point is

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Answer 1

Answer:

√5gl DD Greenberg DVD fvvbhgggfff hehe SCS

Answer 2

Explanation:

Radius=l

V(lower)=v

V(topmost)=v°

Ki+Ui=Kf+Uf

1/2mv^2+0=1/2mv°^2+mgh

h=2l

1/2mv^2=1/2mv°^2+2mgl

V^2=v°2+4gl

HOPE THIS HELPS