College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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The body in the figure is pivoted at O, and two forces act on it as shown. If r1 = 1.30m, r2 = 2.15m, F1 = 4.20N, F2 = 4.90N, theta1 = 75.0o, and theta2 = 60.0o,, what is the net torque about the pivot?
I can find the magnitudes of the two torques (tau1 and tau2). I do not know how to determine their signs, that is, how to determine the direction of the rotation (clockwise or counterclockwise). Please explain what is the axis of rotation here, and how to determine the direction of of the rotation (clockwise or counterclockwise) for this problem specifically and in general.
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