Calculate the force p required to rotate the body

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The semicircular 5-kg plate rotates about a fixed bearing at O that can exert a maximum frictional moment of 1.2 N · m on the plate.

The horizontal force P is applied to a cord wrapped around the plate periphery and pinned at A. (a) With P = 0, deter- mine the maximum angle () for which equilibrium is possible. (b) From the position determined in (a) calculate the force P required to rotate the body counterclockwise.

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Reference no: EM13930308

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