A Mechanics Problem by Alak Bhattacharya

A uniform homogeneous rod of length 40 c m 40 cm . rests on the rough horizontal surface of a table so that 30 c m 30 cm . of its length is lying outside of the table's edge. Coefficient of friction of the table surface is 0.87 0.87 . The rod starts rotating under the action of it's weight force. Upto what angle, in degrees, will the rod rotate before it starts slipping ?


The answer is 15.

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