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Lever Mechanical Advantage Calculator — result sheet
Estimate ideal and efficiency-adjusted mechanical advantage, output force, and work for a simple lever.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Ideal mechanical advantage = effort arm ÷ resistance arm; actual screen = ideal advantage × efficiency; output force = effort force × actual advantage; work = force × distance.
A lever can trade travel distance for force. This calculator keeps the effort arm, resistance arm, efficiency assumption, and effort travel visible, then reports ideal and efficiency-adjusted mechanical advantage, estimated output force, and work.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Effort force — N; minimum 0; maximum 1000000000
- Effort arm length — m; minimum 1.0E-6; maximum 1000000
- Resistance arm length — m; minimum 1.0E-6; maximum 1000000
- Efficiency assumption — %; minimum 0; maximum 100
- Effort travel distance — m; minimum 0; maximum 1000000000
Worked example
| Input | Value |
|---|---|
| Effort force | 100 |
| Effort arm length | 0.6 |
| Resistance arm length | 0.2 |
| Efficiency assumption | 90 |
| Effort travel distance | 0.3 |
Ideal mechanical advantage = 3×, efficiency-adjusted screen = 2.7×, estimated output force = 270 N, input work = 30 J, and useful output work = 27 J.
Assumptions and limits
- The two arm lengths are perpendicular distances from the fulcrum to the relevant force lines.
- The effort force is a nonnegative magnitude applied through the entered effort distance.
- Efficiency is an entered scenario between 0 and 100 percent and is not inferred from a lever type.
- The load path is one-dimensional and the arm geometry does not change during the represented motion.
- The resistance travel uses ideal lever geometry and ignores deformation and clearance.
- The result does not approve a lever, pivot, material, load, fastener, lifting operation, or safe working limit.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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