Given F
1 = 10, F2
1 = 20, Distance from F
1 to fulcrum (x) = 5, calculate Lever Length (d)
The Lever Equation is as follows:F
1x = F
2(d - x)
Multiply the right side of the equation out:F
1x = F
2d - F
2x
Add F2x to both sides:F
1x + F
2x = F
2d - F
2x + F
2x
Cancelling F2x on the right side, we get:F
1x + F
2x = F
2d
Factor out x:x(F
1 + F
2) = F
2d
Divide each side of the equation by F2:Cancelling F2 on the right side, we get:Plug in our numbers and simplify:Lever Length (d) =
7.5Lever Systems Formula Video