examsamples

examsamples - ME 274 Spring 2009 Examination No. 2 PROBLEM...

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ME 274 – Spring 2009 Name Examination No. 2 PROBLEM NO. 2 Given : Concrete block A (having a weight of W A ) is attached to log B (having a weight of W B ) with the cable-pulley system shown. The system is released from rest with log B resting on a rough incline (coefficient of kinetic friction μ k ). Find : For this problem, a) determine the direction of motion for the block A. You need to justify your answer with analysis. b) determine the acceleration of block A. You must provide appropriate free body diagrams in order to receive full credit for this problem. Use the following parameter values in your analysis: W A = 50 lb , W B = 400 lb , k = 0.2 and ! = 36.87 ° . B O k s A s B
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ME 274 – Spring 2009 Name Examination No. 2 PROBLEM NO. 1 Given : Blocks A and B (having masses of 2m and m, respectively) are connected by rigid, massless rod AB of length L. Block A is constrained to move along a smooth vertical guide, and B moves along a smooth, horizontal surface. The system is released from rest when
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examsamples - ME 274 Spring 2009 Examination No. 2 PROBLEM...

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