2018F_Exam3_sol.pdf - EM 306 – Statics TEST 3 Name and EID Unique Fall 2018 Landis All problems require correctly drawn and labeled free body diagrams

EM 306 – Statics TEST 3 Fall 2018 - Landis Name and EID ___________________________________ Unique # ___________________________________ All problems require correctly drawn and labeled free body diagrams for each component that you perform an equilibrium analysis on . Problem 1. Gravity acts along the negative z -direction. The weight of the angle bar is W , and acts at the point (2´,0,0). The support at B does not restrict any rotations, and does not restrict translation along its axis (i.e. the y -direction). (a) Identify the equations required to solve for the tension in the string and all of the reactions at A and B . (b) The algebra for solving for all of these forces is not difficult, but

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Unformatted text preview: you only need to solve for the tension in the string . (30 points) Problem 2. With your solution for the tension in the string from Problem 1, determine the vector amount of this force that is along the line AD and the vector amount that is perpendicular to the line AD . (10 points) EM 306 – Statics TEST 3 Fall 2018 - Landis Problem 3. Gravity acts downward. The coefficients of friction between the blocks, and between the lower block and the ground are both μ = 0.2 . Determine the value for the force P when the blocks begin to move. Note that the side support for the 50 lb block will only act on one side or the other, not both. (20 points)...
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