Question

If a lever was a meter long and the fulcrum was placed at 50mm, what would the mechanical advantage be?

Please show work if possible

Answer 1

The mechanical advantage would depend on where the load force and the balancing force were placed on the stick

MA = (50 - F) / (L - 50)

Supoose the balancing force was placed at zero and the load at 75 cm

then MA = (50 - 0) / (75 - 50) = 50 / 25 = 2

or the balancing force was applied at 10 cm and the load force was applied at 60 cm then

MA = (50 - 10) / (60 - 50) = 40 / 10 = 4