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A uniform rod of mass m and length l can...

A uniform rod of mass `m` and length `l` can rotate in a vertical plane about a smooth horizontal axis point `H`. a. Find angular acceleration `alpha` of the rod. just after it is released from initial horizontal position from rest'? b. Calculate the acceleration (tangential and radial) , point A at this moment.

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`tau_(H) = I_(H)alpha`
` mg. l/2 =(2l^2)/3 alpha rArr alpha=(3g)/(2l)`
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