Question

. For the area shaded in yellow color below, determine the polar moment of inertia with respect
to (a) the centroid of the area and (b) the point O.

Answer 1

Answer:

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Answer 2

When a torque is applied to an object it begins to rotate with an acceleration inversely proportional to its moment of inertia. This relation can be thought of as Newton's Second Law for rotation. The moment of inertia is the rotational mass and the torque is rotational force. Angular motion obeys Newton's First Law.