2. Determine the horizontal force P in the figure to start the 400 lb wedge (a) moving to the right and (b) moving to the left. The angle of friction is 20° at all contact surfaces. 2000 lb 400 lb 15 70°
2. Determine the horizontal force P in the figure to start the 400 lb wedge (a) moving to the right and (b) moving to the left. The angle of friction is 20° at all contact surfaces. 2000 lb 400 lb 15 70°
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