Enter the initial momentum, final momentum, and total time into the calculator to determine the drop force.
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Drop Force Formula
The following equation is used to calculate the Drop Force.
Fd = (Mi-Mf) / t
- Where Fd is the drop force (N)
- Mi is the initial momentum (kg-m/s)
- Mf is the final momentum (kg-m/s)
- t is the change in time (s)
To calculate a drop force, subtract the final momentum from the initial momentum, then divide by the time.
It’s important to note that in the case of an object that bounces off a surface, the final momentum will be negative since it changed direction.
What is a Drop Force?
Definition:
Drop force is a term primarily used in material testing where the impact force of a falling object on a target is measured.
At its core, drop force is a measurement of the impact that an object will experience as it falls onto a surface
How to Calculate Drop Force?
Example Problem:
The following example outlines the steps and information needed to calculate the Drop Force.
First, determine the initial momentum. In this example, the initial momentum of a ball is 500 kg*m/s.
Next, determine the final momentum. After the ball bounces off a surface, the final momentum is -200 kg*m/s.
Next, determine the change in time. The change in time during the bounce is measured to be 5 seconds.
Finally, calculate the drop force using the formula above:
Fd = (Mi-Mf) / t
Fd = (500-(-200)) / 5
Fd = 140 N