The solid L2 Tool Steel shaft AD has a diameter of 30 mm and is supported by smooth bearings at A and D. Coupled to the shaft is themotorwhichdelivers 10 kW of power to the shaft while it is turning at 40 revolutionspersecond. If gear B removes 2 kW and gear C removes 5 kW, determine the absolute maximum shear stress in the shaft.

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.