Question

Two slender links, AC and BC, extend from a wall and support a pulley at C. A cable, tied at D, passes over the small pulley at C and experience an 80-lb force at its free end E. If the pulley is frictionless and of negligible determine the forces developed in members AC and BC. An inextensible (cannot stretch) cable AC and spring CB are originally horizontal. A 100-N weight is attached to point C, and the system is slowly lowered until it reaches static equilibrium at the new position. If the unstretched length of the spring is 0.3 m, determine the spring constant, k. The force P is applied to a small wheel which rolls on the cable ACB Knowing that the tension in both parts of the cable is 750 N, determine the magnitude and direction of P. A 600-lb crate is to be supported by the rope-and-pulley arrangement shown. Determine the magnitude and direction of the force F which should be exerted on the free end of the rope. The collar A may slide freely on the horizontal frictionless rod. The spring attached to the collar has a constant of 10 lb/in. and is undeformed when the collar is directly below support B. Determine the magnitude of the force P required to maintain equilibrium when (a) c = 9 in., (b) c = 16 in.
2.50

Answer 1

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