Fulcrum Calculator

Your details

Class 1: fulcrum in the middle. Class 2: load in the middle. Class 3: effort in the middle.
Choose which unknown you want the calculator to find. Fill in all the other fields.
The weight or resistance force the lever must overcome.
N
Distance from the fulcrum to the point where effort is applied.
m
Distance from the fulcrum to the load point.
m
ResultHigh mechanical advantage
125

The solved unknown value

Mechanical advantage (MA)4
Effort arm (de)2
Load arm (dr)0.5
Effort moment250
Load moment250
Result unitN
Solved forEffort force (Fe)
Effort arm (de)2
Load arm (dr)0.5

You need 125.00 N of effort to balance the load.

  • The mechanical advantage is 4.00: for every 1 N of effort you apply, the lever delivers 4.00 N at the load point.
  • The effort arm (2.000 m) is 4.00x the load arm (0.500 m).
  • Both moments are 250.00 N*m, confirming the lever is in equilibrium.

Next stepThis is a Class 1 lever. To increase mechanical advantage, move the fulcrum closer to the load (Class 1) or lengthen the effort arm.

 = Powered by OnlyCalculators