HW4 - Using a factor of safety of 3.2, calculate the...

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ENGR 111 Homework 4 1 Fall, 2009 Due Monday, Oct. 5 4-1: The truss drawn to the right is loaded with two external forces, of magnitude P, acting vertically downward. Each member can withstand a force of 75 kN in tension and 66 kN in compression. Using a factor of safety of 2.5, calculate the maximum allowable load P. 4-2: The truss drawn to the right is loaded with an external force, of magnitude P, acting vertically downward. Each member can withstand a force of 4000 lbf in tension and 2000 lbf in compression.
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Unformatted text preview: Using a factor of safety of 3.2, calculate the maximum allowable load P. 4-3: All members of the truss drawn to the right are 1.00 m long. There are three applied loads, P, Q and R. The magnitude Q is twice P, and the magnitude R is three times P. Each member can support a force of 150 kN in Tension, and the same amount in compression. Using a factor of safety of 1.5, calculate the maximum allowable magnitudes of P, Q and R. A C D B P 4.0ft 3.0ft 3.0ft A B C D E P Q R...
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