3 20 66 rad s2 13 A cord of negligible mass is wrapped

Last updated: 6/11/2023

3 20 66 rad s2 13 A cord of negligible mass is wrapped around a solid cylinder of a mass 20 kg and radius 20 cm A steady pull of 25 N is applied on cord tangentially The cylinder is mounted on horizontal axis with frictionless bearings What is kinetic energy of wheel when 2 m cord is unwound NCERT Pg 171 1 50 J 2 100 J 3 150 J 4 90 J so that its COM has speed work required to stop it is 1 2 J 2 3J 3943 4 8 J 17 To maintain a rotor at a speed of 200 rad s an transmit a torque of 125 N required by the engine 1 15 kW 2 3 25 kW