(a) Compute the vertical deflection of joint D produced by the 30-kip load in Figure P8.13. For all bars, area = 2 in. 2, and E = 9000 kips/in. 2. (b) Assume that the truss is not loaded. If bar AE is fabricated in. too long, how far to the right must the roller at B be displaced horizontally so that no vertical deflection occurs at joint D?
Figure P8.13:
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