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Newton's second law of rotational motion (8-20)

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Question

The object’s moment of inertia for the axis about which it can rotate

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Review

If torque plays the same role for rotational motion as force plays for translational motion, then we should be able to replace Fx with τz, m with I, and ax with αz in Equation 4-4a to get the rotational version of Newton’s second law: