The distance from the fulcrum to the action of the lesser force is 60cm. The forces that act on the lever

The distance from the fulcrum to the action of the lesser force is 60cm. The forces that act on the lever arms are 12N and 72N. Define a shoulder of greater strength.

These tasks: x1 (distance from the fulcrum to the point of action of the lesser force) = 60 cm (0.6 m); F1 (lesser force) = 12 N; F2 (high force) = 72 N; for the calculation, we assume that the lever is in equilibrium.

We express the shoulder of greater force from the equality: F1 * x1 = M = F2 * x2, whence x2 = F1 * x1 / F2.

Calculation: x2 = 12 * 0.6 / 72 = 0.1 m.

Answer: The upper arm is 0.1 m or 10 cm.