A diving board has a hollow rectangular cross section 30 in wide and 3.0 in thick and is s...

A diving board has a hollow rectangular cross section 30 in wide and 3.0 in thick and is supported as shown in Figure. Compute the maximum stress due to bending in the board if a 300-lb person stands at the end. Would the board be safe if it were made of extruded 6061-T4 aluminum and the person landed at the end of the board with an impact?

FIGURE Driving board for problem