A loaded ore car has a mass of 950 kg and rolls on railswith negligible friction. It
Chapter 8, Problem 41(choose chapter or problem)
A loaded ore car has a mass of 950 kg and rolls on railswith negligible friction. It starts from rest and is pulledup a mine shaft by a cable connected to a winch. Theshaft is inclined at 30.08 above the horizontal. The caraccelerates uniformly to a speed of 2.20 m/s in 12.0 sand then continues at constant speed. (a) What powermust the winch motor provide when the car is movingat constant speed? (b) What maximum power mustthe winch motor provide? (c) What total energy hastransferred out of the motor by work by the time thecar moves off the end of the track, which is of length1 250 m?
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