A pendulum rod has a length L and has a mass m at the end. The pendulum is released from rest at an angle θ away from straight down. (In this problem you may neglect friction and mass of the pendulum arm.)
What will the velocity of the mass be at the bottom?
What will the tension in the pendulum arm be as it rotates through the bottom of its swing?
A person holds the pendulum in place before it is released. What torque (about the pivot of the pendulum) must the person apply?
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