# Static and kinetic friction
# Scope: Coulomb static friction capacity at supplied normal force.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

normal = 100 N
coefficient = 0.3
demand = 20 N

capacity := normal*coefficient [N]
margin := capacity-demand [N]

check no sliding: demand <= capacity

scenario alternative: normal = 80 N