Question

A uniform stick of mass m and length l is pivoted at its centre

Answer 1

Answer:

hii

your answer is here !

Explanation:

ans is mgl/2(1-costheta)

bez P.Einitail=mgl/2 h=l/2

P.E final=mgl/2 cos theta P. E is in cos direction

so P.Ef- P.Ei= mgl/2(1-cos theta)

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