Pin-connected rigid bars AB, BC, and CD are initially held in the positions shown by taut wires (1) and (2). Joint B is

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Pin Connected Rigid Bars Ab Bc And Cd Are Initially Held In The Positions Shown By Taut Wires 1 And 2 Joint B Is 1 (59.42 KiB) Viewed 32 times

Pin-connected rigid bars AB, BC, and CD are initially held in the positions shown by taut wires (1) and (2). Joint B is then displaced horizontally 4.5 in. to the left. For this problem, neglect the corresponding downward vertical displacement of joint B. What is the change in the average normal strain in wire (2)? Assume a = 28 ft and b = 21 ft. b tc (2) | Answer: D Change in average normal strain in wire (2) - i in./in.