Solve Prob. 13–63 if the bar has a circular cross section of 30-mm diameter.
(Reference Problem 13-63)
A bar having a square cross section of 30 mm by 30 mm is 2 m long and is held upward. If it has a mass of 5 kg / m, determine the largest angle θ , measured from the vertical, at which it can be supported before it is subjected to a tensile stress along its axis near the grip.
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