Question

The right-angle bar with equal legs weighs 6.0 lb and is freely hinged to the vertical plate at C. The bar is prevented from rotating by the two pegs A and B fixed to the plate. Determine the acceleration a of the plate for which no force is exerted on the bar by either peg A or B.

Chapter 6, Problem 6/002 the plate The right angle bar with equal legs weighs 6.0 lb and is freely hinged to the vertical plate at C. The bar is prevented from rotating by the two pegs A and B fixed to t 8 Determine the acceleration a of the plate for which no force is exerted on the bar by either peg A or 7.3 7.3 ft/sec2 Answer: a the tolerance is +/-296

Answer 1

Considering horizontal direction,

Rx = ma + ma = -2ma

In vertical direction,

Ry = 2 mg

Taking moment about C,

ma (x/2) = (3/2) mg x

a = 3g = 3 x 32.2 = 96.6 ft/sec^2

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