A bar having a square cross section of 30 mm by 30 mm is 2 m long and is held upward. If i...

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 6. measured from The vertical, at which it can be supported before it is subjected to a tensile stress along its axis near the grip.