Problem 1.322

What work should be done in order to squeeze all water from a horizontally located cylinder (Fig. 1.85) during the time $t$ by means of a constant force acting on the piston? The volume of water in the cylinder is equal to $V,$ the cross-sectional area of the ori-fice to $s$, with $s$ being considerably less than the piston area. The friction and viscosity are negligibly small.