2009F_Test2_sol

# 2009F_Test2_sol - EM 306 Statics TEST 2 Fall 2009 Landis...

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EM 306 – Statics TEST 2 Fall 2009 - Landis Name ___________________________________ EID ___________________________________ Unique Number ___________________________ Instructions: All problems require correctly drawn and labeled free body diagrams. Show all of your work. Place a box around your final answers and include units. Problem 1. Consider an object with a set of N forces, F 1 , F 2 , …, F N , that are applied at the positions r 1 , r 2 , …, r N , respectively. The object also has a set of M couples applied to it, C 1 , C 2 , …, C M . The sum of the forces is zero, and the sum of the moments due to the forces and couples about point A is zero. (a) Write an equation for the sum of the forces. (b) Write equations for the moment about point A and for the moment about some other point B due to the forces and couples. (c) Prove that the moment about B is zero. (10 points) Problem 2. The rod O-O is press-fit into the component such that rotation about the axis and translation along the

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2009F_Test2_sol - EM 306 Statics TEST 2 Fall 2009 Landis...

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