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A uniform semicircular wire is hinged at...

A uniform semicircular wire is hinged at ‘A’ so that it can rotate freely in vertical plane about a horizontal axis through ‘A’. The semicircle is released from rest when its diameter AB is horizontal Find the hinge force at ‘A’ immediately after the wire is released.

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The correct Answer is:
`Mg sqrt((1)/(4) + (1)/(pi^(2)))`
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