A slender rod AB, of weight W, is attached to blocks A and B, which move freely
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A slender rod AB, of weight W, is attached to blocks A and B, which move freely in the guides shown. The blocks are connected by an elastic cord which passes over a pulley at C.
(a) Express the tension in the cord in terms of W and θ.
(b) Determine the value of θ for which the tension in the cord is equal to 3W
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