Water flows through two sections of the vertical pipe shown in Fig. P8.77. The bellows c...

Water flows through two sections of the vertical pipe shown in Fig. P8.77. The bellows connection cannot support any force in the vertical direction. The 0.4-ft-diameter pipe weighs 0.2 lb/ft, and the friction factor is assumed to be 0.02. At what velocity will the force, F, required to hold the pipe be zero?