The collar has a weight of \(50 \mathrm{lb}\) and falls from rest 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 \(h=1 \mathrm{ft}\), (b) released from a height \(h \approx 0\), and (c) placed slowly on the flange at \(A\). Take \(E_{\mathrm{ti}}=16\left(10^{3}\right) \mathrm{ksi}, \sigma_{Y}=60 \mathrm{ksi}\).

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4 ft h 0.5 in. A