In the late 1800's, twenty-five percent of the world's nickel production came from Nickel Mines, Pennsylvania. In one mining operation, nickel ore was loaded on carts that rolled on frictionless rails that ran from the dig-site, through the level mine, and were then pulled up a mine shaft inclined at 21.00 above the horizontal by a cable connected to a winch. at the bottom of a 1100 m long ramp and was accelerated at a constant acceleration to a speed of 2.20 m/s in 13.0 s and then continued at this constant speed to the top of the ramp. loaded ore car with a mass of 810 kg started from rest (a) Determine the maximum power the winch motor provides while the cart is accelerating. W (b) Determine the power the winch motor needs to provide when the cart is moving at a constant speed. W (c) What is the total work accomplished by the winch motor by the time a loaded ore cart reaches the end of the ramp? J

In the late 1800's, twenty-five percent of the world's nickel production came from Nickel Mines, Pennsylvania. In one mining operation, nickel ore was loaded on carts that rolled on frictionless rails that ran from the dig-site, through the level mine, and were then pulled up a mine shaft inclined at 21.00 above the horizontal by a cable connected to a winch. at the bottom of a 1100 m long ramp and was accelerated at a constant acceleration to a speed of 2.20 m/s in 13.0 s and then continued at this constant speed to the top of the ramp. loaded ore car with a mass of 810 kg started from rest (a) Determine the maximum power the winch motor provides while the cart is accelerating. W (b) Determine the power the winch motor needs to provide when the cart is moving at a constant speed. W (c) What is the total work accomplished by the winch motor by the time a loaded ore cart reaches the end of the ramp? J