Calculate the force amplification for a machine system using forces or distances.
System Inputs
Actual (Force-based)
AND/OR
Ideal (Distance-based)
Results
Enter forces or distances to see the advantage
Overview
Mechanical advantage is a trade-off between force and distance. A machine with high mechanical advantage allows a small input force to lift a large weight, but only by moving that input force over a much larger distance than the weight travels.
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Pro Tips
If MA > 1, the machine is designed to multiply force (e.g., a car jack).
If MA < 1, the machine is designed to multiply speed or distance (e.g., a bicycle gear).
Ideally (without friction), the ratio of distances (IMA) equals the ratio of forces.
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Fun Facts
"A simple lever can move a car if the lever arm is long enough."
"Human joints are internal levers that mostly operate with MA < 1, prioritizing range of motion over raw strength."
"The compound gears in a clock can provide mechanical advantages in the millions to translate small wheel turns into slow hand movements."
