ENGR&214Homework07 - ENGR 214 Homework 07 Problem 1...

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ENGR& 214 Homework 07 Problem 1 Determine the force in members EF, EP , and LK of the Baltimore bridge truss and state if the members are in tension or compression. Also, indicate all zero-force members. Given: m 2 m 2 kN 2 kN 3 kN 5 kN 2 = = = = = = b a F F F F 4 3 2 1 Problem 2 Determine the force in members JI and DE of the K truss . Indicate if the members are in tension or compression. Given: ft 15 ft 20 lb 1800 lb 1500 lb 1200 = = = = = d c F F F 3 2 1 Problem 3 Determine the force in each member of the space truss and state if the members are in tension or compression. The truss is supported by a ball-and-socket joints at A B , and E. Hint : The support reaction at E acts along member E C . Why?
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Given: m m m m . m jN i 2 1 5 5 1 2 400 200 = = = = = + - = e d c b a F Problem 4 The link is used to hold the rod in place. Determine the required axial force on the screw at E if the largest force to be exerted on the rod at B, C or D is to be . F max Also, find the magnitude of the force reaction at pin A . Assume all surfaces of contact are smooth.
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