For the bicycle pedal arm assembly in Figure P6-1 (repeated here) assume a riderapplied force that ranges from 0 to 1500 N at each pedal each cycle. Design a suitable shaft to connect the two pedal...

For the bicycle pedal arm assembly in Figure P6-1 (repeated here) assume a riderapplied force that ranges from 0 to 1500 N at each pedal each cycle. Design a suitable shaft to connect the two pedal arms and carry the sprocket against a step. Use the fatigue safety factor of 2 and a material with Sut = 500 MPa. The shaft has a square detail on each end where it inserts into the pedal arms.