Fulcrum Calculator

Balance a lever to find the unknown force.

Effort force (N)

Effort arm

Load arm

Load force (N) 200

Mechanical advantage 4

Formula: load = effort × effort arm ÷ load arm

Step-by-step with your numbers:

1. Values used:

2. Effort force = 50 N

3. Effort arm = 2

4. Load arm = 0.5

6. Effort force x Effort arm = 50 x 2 = 100

7. Load force = (Effort force x Effort arm) / Load arm = 100 / 0.5 = 200N

8. Mechanical advantage = 4

Did we solve your problem today?

A lever balances when the torques about the fulcrum are equal on both sides.

The math behind it

effort × effort arm = load × load arm. A longer effort arm multiplies your force.

50 N on a 2 m arm lifts 200 N on a 0.5 m arm (advantage 4).

Where should the fulcrum go for more lift?

Closer to the load, lengthening the effort arm.