1. A motor's shaft is spinning at a speed of 1800 r/min. What is the shaft speed in radians per second?
2. A flywheel with a moment of inertia of 4 kg × m2 is initially at rest. If a torque of 5 N × m (counterclockwise) is suddenly applied to the flywheel, what will be the speed of the flywheel after 5 s? Express that speed in both radians per second and revolutions per minute.