Question: In Prob. 10.12, knowing that a = 42 in., b = 28 in., and W = 160lb, determine the tension T in cable AE when

In Prob. 10.12, knowing that a = 42 in., b = 28 in., and W = 160lb, determine the tension T in cable AE when the door is held in the position for which BD = 42 in.
Problem 10.12: An overhead garage door of weight W consists of a uniform rectangular panel AC that is supported by two sets of frictionless rollers A and B which slide in horizontal and vertical channels, respectively. The door is held in the position shown by a cable attached to the door at the middle of its upper edge. Express the tension T in the cable in terms of W, a, b, and θ.

D. T.

D. T.

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