Quiz_12-14

# Quiz_12-14 - 1 The box has a weight of 35 N that acts...

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1. The box has a weight of 35 N that acts vertically at its center of gravity G. The table AB can be elevated by applying a force at point D. The operator applies vertical force only. Find this vertical force applied by the operator at D if a = 19 cm and b = 23 cm.

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2. The compound beam is supported by a rocker at B and is fixed to the wall at A, where P 1 = 15 lb, P 2 = 18 lb, M = 200 lb-ft. If it is hinged (pinned) together at C, determine the horizontal component of the force reaction at A. Neglect the weight of the beam. The dimensions are: d = 2 ft, e = 5 ft, f = 6 ft, and g = 5 ft.

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3.
Block A and B weigh 200 lb and 5 lb respectively and the coefficient of static friction between all contact surfaces is 0.10. Determine the magnitude of the minimum force P required to cause any impending motion of the blocks. The angle θ = 30°.

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4. Block A and B weigh 100 lb and 60 lb respectively. If block A has a center of gravity at G as shown, determine the largest horizontal force P that causes impending motion of the

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Quiz_12-14 - 1 The box has a weight of 35 N that acts...

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