A 48-ft sheet of plywood weighing 34 lb has been temporarily placed among three pipe supports. The

A 4×8-ft sheet of plywood weighing 34 lb has been temporarily placed among three pipe supports. The lower edge of the sheet rests on small collars at A and B and its upper edge leans against pipe C. Neglecting friction at all surfaces, determine the reactions at A, B, and C.

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3 ft 4 ft 4 ft 1 ft 5 ft 3.75 ft 3 ft