**About Lever Efficiency Calculator (Formula)**

A lever is a simple machine that consists of a rigid bar or beam that is free to rotate around a fixed point called the fulcrum. Levers can be used to amplify force or to increase the distance over which a force is applied. The efficiency of a lever can be measured by the amount of output force it produces compared to the amount of input force that is applied.

**The formula for calculating lever efficiency is:**

**Lever Efficiency = (Actual Output Force / (Effort Force * Mechanical Advantage)) * 100**

**Where:**

- Actual Output Force is the force produced by the lever at the output end
- Effort Force is the force applied to the lever at the input end
- Mechanical Advantage is the ratio of the distance from the fulcrum to the input end of the lever to the distance from the fulcrum to the output end of the lever

The Lever Efficiency formula calculates the efficiency of a lever by dividing the actual output force by the product of the effort force and the mechanical advantage, and then multiplying the result by 100 to express it as a percentage. The higher the lever efficiency, the more output force the lever produces for a given input force.

A lever efficiency calculator is a tool that uses the lever efficiency formula to help calculate the efficiency of a lever. It typically requires the user to input the actual output force, effort force, and mechanical advantage, and then calculates and displays the lever efficiency. Lever efficiency calculators are useful for engineers, physicists, and anyone who works with levers or simple machines.