The document shows a calculation of the torque equilibrium for a rod with forces applied at different distances from the fulcrum. The perpendicular force F⊥ required for equilibrium is calculated to be 8.7 N based on a 40 N force applied 2.6 cm from the fulcrum and the distance to the fulcrum being 12 cm.

1. 56. Setting up equilibrium of torques leads to a simple “level principle” ratio:
2.6 cm
F⊥ = (40 N) = 8.7 N .
12 cm