Problem

A water jet is emitted from a nozzle attached to the ground. The jet has a constant mass f...

A water jet is emitted from a nozzle attached to the ground. The jet has a constant mass flow rate = 15 kg/s and a speed υw relative to the nozzle. The jet strikes a 12 kg incline and causes it to slide at a constant speed υ0 = 2 m/s. The kinetic coefficient of friction between the incline and the ground is μk = 0.25. Neglecting the effect of gravity and air resistance on the water flow, as well as friction between the water jet and the incline, determine the speed of the water jet at the nozzle if θ = 47°.