Solve Problem 4.99, assuming that the small block C is moved and placed under edge DE at a point 0.15 m from corner E.

PROBLEM 4.99

An opening in a floor is covered by a 1×1.2-m sheet of plywood of mass 18 kg. The sheet is hinged at A and B and is maintained in a position slightly above the floor by a small block C. Determine the vertical component of the reaction (a) at A, (b) at B, (c) at C.

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0.2 m 0.6 m 1.2 m 0.2 m 0.15 m