The motor is currently not running, and locked such that the system is in static equilibrium….

The motor is currently not running, and locked such that the system is in static equilibrium. The motor output shaft has an OD of 40 mm and an ID of 30 mm. There is a steel hub engaged on the end of the mild steel shaft, which is held in place by an aluminum locking key, as shown, of width 5 mm and length 10 mm. A 100 mm diameter pulley, as shown, is bolted to the hub using 4 bolts on a 6 cm diameter bolt circle.

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