# Winch drum torque and capacity
# Scope: Constant-radius drum, supplied drivetrain efficiency.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

load = 200 N
radius = 30 mm
speed = 0.1 m/s
efficiency = 0.8

torque := load*radius/efficiency [N*m]
omega := speed/radius [rpm]
power := load*speed/efficiency [W]

check motor torque budget: torque <= 10 N*m

scenario alternative: load = 160 N