A horizontal water jet from a nozzle of constant exit

Problem 14P

A horizontal water jet from a nozzle of constant exit cross section impinges normally on a stationary vertical flat plate. A certain force F is required to hold the plate against the water stream. If the water velocity is doubled, will the necessary holding force also be doubled? Explain.

                                                                           Step by Step Solution

Step 1 of 2

The expression for the force acting on the stationary vertical flat plate is,

Where,

 is the density.

a is the area of cross-section and

V is the velocity.