Mechanical Advantage Calculator Formula
Understand the math behind the mechanical advantage calculator. Each variable explained with a worked example.
Formulas Used
Mechanical Advantage
ma = output_force / input_forceVariables
| Variable | Description | Default |
|---|---|---|
output_force | Output Force (Load)(N) | 500 |
input_force | Input Force (Effort)(N) | 100 |
How It Works
Mechanical Advantage
Mechanical advantage describes how much a simple machine multiplies the input force.
Formula
MA = F_output / F_input
An MA greater than 1 means the machine amplifies force; less than 1 means it amplifies distance/speed instead.
Worked Example
A lever lifts a 500 N load with 100 N of effort.
- 01MA = F_output / F_input
- 02MA = 500 / 100
- 03MA = 5
Frequently Asked Questions
Can mechanical advantage be less than 1?
Yes. Some machines trade force for speed or distance. A baseball bat has MA less than 1 but amplifies the speed of the tip.
Does a machine with high MA save energy?
No. By conservation of energy, what is gained in force is lost in distance. Work input equals work output (minus friction losses).
What are examples of simple machines?
Levers, pulleys, inclined planes, wedges, screws, and wheel-and-axle systems are the six classical simple machines.
Ready to run the numbers?
Open Mechanical Advantage Calculator