Torque on Pole with Cable Support · CAP 2001 #23

Physics · mechanics

Problem

A uniform pole is attached to a vertical wall by a frictionless pivot. The pole is held horizontal by a vertical cable attached to the ceiling as shown. Considering torques on the pole about the axis of the pivot, which one of the statements below the figure is correct? [Figure: Horizontal pole attached to wall with vertical cable support] (a) The magnitude of the torque due to the tension in the cable is equal to the magnitude of the torque due to the weight of the pole. (b) The magnitude of the torque due to the tension in the cable is greater than the magnitude of the torque due to the weight of the pole. (c) The magnitude of the torque due to the tension in the cable is less than the magnitude of the torque due to the weight of the pole. (d) The tension in the cable is equal to the weight of the pole.

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