Section: Solid Mechanics | Type: NAT | Marks: 2
An electric motor’s rotor is spinning at 1500 rpm when its load and power are cut- off. The rotor which has a mass of 50 kg and a radius of gyration of 200 mm, then coasts down to rest. Due to kinetic friction, a constant torque of 10 Nm acts on the rotor as it coasts down. The number of revolutions executed by the rotor before it comes to rest is _____ (in integer).
Answer: 392 to 394