Homework • A water tank 3m in diameter and 6m high is made from a steel having a thickness of 12mm. (a) When the tank is filled with water determine the circumferential stress. (b) Determine the longitudinal stress at the bottom of the tank when it is filled with water. (c) If the circumferential stress is limited to 5 MPa, what is the maximum height of water to which the tank maybe filled.

A 180-mm length of 30 x 40 mm solid rectangular bar is loaded as shown in the diagram. The right end of the tube is fixed to a rigid frame while the left end is free. (a) Draw the stress element for point B at the top center of the bar (right end) and label the stress vectors acting on the element, including the stress magnitudes. (b) Draw the stress element for point C at the middle of the front face of the bar (right end) and label the stress vectors acting on the element, including stress magnitudes