A loaded ore car has a mass of 950 kg and rolls on rails

Last updated: 6/8/2023

A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction It starts from rest and is pulled up a mine shaft by a cable connected to a winch The shaft is inclined at 30 5 above the horizontal The car accelerates uniformly to a speed of 2 35 m s in 15 0 s and then continues at constant speed a What power must the winch motor provide when the car is moving at constant speed kW b What maximum power must the motor provide kW c What total energy transfers out of the motor by work by the time the car moves off the end of the track which is of length 1 250 m