While a 0.5 kg bird flies parallel to the ground, it hits a vertical rod hinged on the ground as shown in the figure. The rod is smooth, homogeneous and 1 m long. The mass of the rod is 2 kg. After the collision, the bird falls to the ground, stunned. In this case, (a) find the angular velocity of the rod just after the bird strikes. (b) What is the angular velocity of the rod when it hits the ground?

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.