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Homework_6 - AB of the structure Problem 4 – 10 points...

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CE 221 Homework 6 Due Wednesday October 13, 2010 Red colored problems to be solved in the recitation. Please add HW 6 problems to the list of problems for sample test 1. Problem 1 – 10 points 1 Force F2 is located in the y-z plane at 30o above the y axis. The directional angles of F1 are given. Assume a weightless hook and calculate the resultant force acting on it and the directional cosines of the resultant force.

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Problem 2 – 10 points 2 Calculate the force applied to the tower by each cable if the net force vector F is F = (0.0i - 1000.0j + 0.0k) pounds F
Problem 3 – 10 points Determine the length of member

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Unformatted text preview: AB of the structure Problem 4 – 10 points The members of a truss are pin-connected at joint O. Determine the magnitude of F 1 and its for equilibrium. Set F 2 = 6 kN. 3 Problem 5 – 10 points Determine the total moment of the three forces about point A. 4 5 m Problem 6 – 10 points The light fixture is suspended from 2 springs each having an unstretched length d of 4 ft and stiffness k = 5 lb/ft. Determine the weight of the fixture at equilibrium if the angle θ is equal to 45 o . Problems 7 through 10 (10 points each); solve problems 3.74 , 4.13, 4.19 and 4.24 in your book. 5 d d...
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