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Boom AB is supported by cable BC and a hinge at A. Knowing that the boom exerts on pin B a force directed along the

Boom AB is supported by cable BC and a hinge at A. Knowing that the boom exerts on pin B a force directed along the boom and that the tension in rope BD is 310 N determine (a) the value of a for which the tension in cable BC is as small as possible, (b) the corresponding value of the tension.

20 30 Fig. P2.66

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