Enter the input force and the mechanical advantage into the calculator to determine the output force.

Output Force Calculator

General MA
Lever
Pulley
Hyd/Pneu
Screw Jack
Enter any two of Input, MA, Output. Efficiency optional.

Output Force Formula

The following equation is used to calculate the Output Force.

OF = IF * MA
  • Where OF is the output force (N)
  • IF is the input force (N)
  • MA is the mechanical advantage

To calculate an output force, simply multiply the input force by the mechanical advantage ratio.

What is an Output Force?

Definition:

An output force measures the total force generated by a system with a given input force and mechanical advantage. In other words, it measures how much force a system, such as a lever, generates due to mechanical advantage.

How to Calculate Output Force?

Example Problem:

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

First, determine the input force. In this example, the input force is found to be 100N.

Next, determine the mechanical advantage ratio. For this problem, the mechanical advantage is 4:1

Finally, calculate the Output Force using the formula above:

OF = IF * MA

OF = 100 * 4:1

OF = 400 N

FAQ

What is mechanical advantage and how is it calculated?

Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device, or machine system. It is calculated by dividing the output force by the input force. For simple machines, such as levers and pulleys, the mechanical advantage can also be determined by the ratio of distances from the fulcrum or the ratio of the number of supporting ropes.

Can the output force ever be less than the input force?

Yes, the output force can be less than the input force if the mechanical advantage is less than one. This situation typically occurs in machines designed to increase speed or distance traveled rather than force, such as in the case of gears or pulleys designed to increase speed at the expense of force.

Are there any limitations to how much a mechanical advantage can increase an output force?

While theoretically, mechanical advantage can significantly increase an output force, practical limitations exist due to factors such as friction, the efficiency of the machine, and material strength. These factors can reduce the actual mechanical advantage achieved, making the real-world output force less than what pure calculations may predict.