Question: Beam AD carries the two 40-lb loads shown. The beam is held by a fixed support at D and by the cable BE which is

Beam AD carries the two 40-lb loads shown. The beam is held by a fixed support at D and by the cable BE which is attached to the counter-weight W. Determine the reaction at D when

(a) W = 100 lb,

(b) W = 90 lb.

-5 ft- D. V40 Ib 40 lb 4 ft

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