Awinding drum raises a cage of mass 800 kg though a height 100 m. the winding drum has a mass of 200 kg and an effective radius of 0.5 m and a radius of gyration of 0.3 m. the rope has a mass of 0.9 kg/m. the cage has an initial acceleration of 2 m/s? until a velocity of 13 m/s is reached, after which the velocity is constant until the cage nears the top. calculate: a)- the torque required at the start of the acceleration; b)- the torque required just after the end of the acceleration period; c)- the power at just after the end of the acceleration period.