Enter the mass flow rate and the velocity of the water exiting the nozzle into the calculator to determine the water jet force. This calculator can also determine the mass flow rate and velocity if given the other variables.

## Water Jet Force Formula

The following equation is used to calculate the Water Jet Force.

WJF = V*MFR
• Where WJF is the water jet force (N)
• V is the velocity of the water (m/s)
• MFR is the mass flow rate of the water (kg/s)

To calculate the water jet reaction force, multiply the velocity of the water by the mass flow rate.

## What is a Water Jet Force?

Definition:

A water jet force typically describes the reaction force at the nozzle of the water jet due to the flow of water out of the nozzle.

## How to Calculate Water Jet Force?

Example Problem:

The following example outlines the steps and information needed to calculate Water Jet Force.

First, determine the velocity of the water. In this example, the velocity of the water is found to be 100m/s.

Next, determine the mass flow rate of the water. In this case, the mass flow rate of the water is measured to be 3 kg/s.

Finally, calculate the Water Jet Force using the formula above:

WJF = V*MFR

WJF = 100*3

WJF = 300 N