The collar has a weight of 50 lb and falls down the titanium bar. If the bar has a diamete...

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, σY = 60 ksi.