14-45. The collar has a weight of 50 lb and falls down the titanium bar. If the bar has a diameter of 0.5 in., determine the maximum stress developed in the bar if the weight is ( a) dropped from a height of h = 1 ft, ( b) released from a height h ≈ 0, and ( c) placed slowly on the flange at A. Eti = 16(103) ksi, sY = 60 ksi. | |
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