The spool has a mass of 95 kg and a radius of gyration of 460 mm about its center of mass O. If it is released from rest, determine its angular velocity after its center O has moved down the plane a distance of 3 m. The contact surface between the spool and the inclined plane is smooth.
ok i know i have o use,
Uw=W(delta y), i've tried this Uw=(100x9.81)x3....but that's wrong
But we haven't even met!