FIGURE 2. Q;B = 5 in: BC = 15 in.; Q̟C= 21 in. ; Q:Q4 = 26 in.; CBE = 27 in. The sketch represents a crank and rocker mechanism used in a certain type of wool- combing machinery. Q;B is the driving crank, rotating clockwise at a uniform speed of 120 pm. For the position shown, Q;B horizontal and making an angle of 30 degree with the line of centers, find the linear acceleration of the 500 connection rod BC.
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