What is angular acceleration of rod at instant released

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A thin uniform rod (length = 1.1 m, mass = 4.2 kg) is pivoted about a horizontal frictionless pin through one of its ends. The moment of inertia of the rod through this axis is 1/3 mL2. The rod is released when it is 55° below the horizontal. What is the angular acceleration of the rod at the instant it is released?

Reference no: EM13552471

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