Question: A thin uniform rod ( length L = 1 . 2 m , mass M = 2 . 0 kg ) is pivoted about a

A thin uniform rod (length L =1.2 m, mass M =2.0 kg) is pivoted about a horizontal, frictionless pin through one end of the rod. (The moment of inertia of the rod about this axis is ML2/3.) The rod is released when it makes an angle of 60 with the horizontal. What is the angular acceleration of the rod at the instant it is released?

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