(Answered) A 30-kg cover for a roof opening is hinged at corners a and

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A 30-kg cover for a roof opening is hinged at corners A and B. The roof forms s an angle of 30o with the horizontal, and the cover is maintained in a horizontal position by the brace CE. Determine

(a) The magnitude of the force exerted by the brace,

(b) The reactions at the hinges. Assume that the hinge at A does not exert any axial thrust.

1759_reactions at the hinges.jpg

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