2. The pendulum of a grandfather clock consists of a thin rod of length 3R and mass M, attached to a thin-walled hoop of radius R and mass 3M. 3R a. What is the moment of inertia of the rod about the axis shown? R axis of M rotation 3M b. What is the moment of inertia of the hoop about the axis shown? Hint: use the parallel axis theorem I = lem + mh? where Icm is the moment of inertia through a parallel axis through the center of mass and h is the distance between the two axis. c. What is the total moment of inertia of the pendulum (rod and hoop) about the axis of rotation shown? Check that your answer only contains knowns M and R and is dimensionally correct.

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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.