A water jet leaves a fixed nozzle with a velocity of 10 m/s.

The jet diameter is 10 cm. A 30o

cone is pushed into the water

jet at a speed of 5 m/s. The water impinges on the cone with the

jet axis and the cone axis in perfect alignment so that the water

is divided evenly by the cone. Bernoulli’s equation suggests that

because the pressure on the jet boundary is constant, the water

velocity relative to the cone surface is constant. Determine the

thickness of the water stream when it reaches the base of the

cone.