If P = 20 lb in the figure, replace the three couples with a single equivalent couple, specifying its magnitude and the direction of its axis

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If P= 20 lb in the figure, replace the three couples with a single equivalent couple, specifying its magnitude and the direction of its axis.

3. Compute the moment of the 0.4-lb force about the pivot O of the wall-switch toggle. F = 0.4 lb 30°

Calculate the moment Mg of the 895-N force about the bolt at B. Simplify your work by first replacing the force by its equivalent force- couple system at A. The moment is positive if counterclockwise, negative if clockwise. Assume F = 895 N, r= 155 mm, h = 490 mm, 0 = 30% = 38° OC Answer: Mg = i 0 h N-m