(Solved): In the stepped shaft shown, which has a full quarter-circular fillet, \( D=1.25 \) in. and \( d=1 ...

In the stepped shaft shown, which has a full quarter-circular fillet, \( D=1.25 \) in. and \( d=1 \) in. Knowing that the speed of the shaft is \( 2200 \mathrm{rpm} \) and that the allowable shearing stress is \( 7500 \mathrm{psi} \), determine the maximum power that can be transmitted by the shaft. Refer to figure \( 3.28 \). The maximum power that can be transmitted by the shaft is hp.