IEA-Spring2004-Final-Solution

# IEA-Spring2004-Final-Solution - PROBLEM 2 (20 points) In...

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PROBLEM 2 (20 points) In the following problem we consider two men trying to slide a 6m long plank over an overhead rack. The plank has a mass of 100kg and the coefficient of kinetic friction between the plank and each support is 0.5. (i) Draw a clear free body diagram of the plank while it is sliding on the rack. . The complete free body diagram should include all relevant forces and couples, coordinate axis, and proper dimensions. (8 pt) (ii) Compute the minimum force ‘P’ that must be applied to the rope to begin moving the rack. (8 pt) (iii) Assuming that the force applied to the rope does not change, the chance that plank may lift off the support at A (4 pt) (a) Does not exist (b) increases when the angle between the rope and the plank is greater than 30 o (c) increases when the angle between the rope and the plank is less than 30 o (d) The information provided is not sufficient to answer the question.

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PROBLEM 3 (15 points) Rod AB is subjected to the 200N force as shown. BE and
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## This note was uploaded on 01/19/2012 for the course ENGR 1100 taught by Professor Anderson during the Fall '06 term at Rensselaer Polytechnic Institute.

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IEA-Spring2004-Final-Solution - PROBLEM 2 (20 points) In...

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