Lever Mechanical Advantage
Compute lever mechanical advantage MA = Le/Ll from effort arm Le and load arm Ll.
Inputs
Formula
MA = Le / Ll
MA>1 means force gain at the cost of distance.
Fundamentals
Compute lever mechanical advantage MA = Le/Ll from effort arm Le and load arm Ll.
This tool computes Lever Mechanical Advantage from the formula: MA = Le / Ll
History
Classical mechanics founded by Newton; kinematics formulas remain the basis of mechanical and vehicle design.
Engineering applications
Used for mechanism kinematics, energy calculations and balancing.
Glossary
| Effort arm Le | Input parameter |
| Load arm Ll | Input parameter |
| Mech. advantage MA | Output result |
How to use
- Fill in Effort arm Le, Load arm Ll in the Inputs section (watch the unit on each field).
- Click Calculate; the tool evaluates the formula shown above.
- Read Mech. advantage MA in the results area.
Formula · Worked Example · Knowledge
Formula
核心计算关系：MA = Le / Ll
输入变量：
- Effort arm Le
Le— mm - Load arm Ll
Ll— mm
输出结果：
- Mech. advantage MA
MA
假设/适用：Kinematic formulas assume rigid bodies, ignoring friction & elasticity; add losses for dynamics.
Worked Example
根据公式 MA = Le / Ll，取 Effort arm Le = 200 mm；Load arm Ll = 50 mm。
代入计算得：Mech. advantage MA = 4。
Key Points
- Kinematic formulas assume rigid bodies, ignoring friction & elasticity; add losses for dynamics.
- Use SI units (kg, m, s, rad) to avoid conversion errors.
- Angular and linear quantities relate by radius r: v = ω·r, a = α·r.
Parameters
Inputs
| Parameter | Symbol | Unit | Default |
|---|---|---|---|
| Effort arm Le (mm) | Le | mm | 200 |
| Load arm Ll (mm) | Ll | mm | 50 |
Outputs
| Result | Symbol | Unit |
|---|---|---|
| Mech. advantage MA | MA |
Applications
- Linkage and cam kinematics design
- Pulley mechanical-advantage study
- Engine valve-train and crank analysis
FAQ
What formula does this tool use?
This tool computes per ISO / AGMA / ASME standard formulas: MA = Le / Ll
How accurate are the results?
Results match input precision, based on SI units and common engineering approximations; for critical duty re-check with a safety factor.
Where is it used?
Linkage and cam kinematics design