physics

posted by .

A loaded ore car has a mass of 935 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 26.0° above the horizontal. The car accelerates uniformly to a speed of 2.20 m/s in 11.0 s and then continues at constant speed

(b) What maximum power must the winch motor provide?
(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 1100 m?

I figured out in part A the power when the car is at constant speed but I can't figure out these last parts.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. PHYSICS HELPPPP

    A loaded ore car has a mass of 880 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 28.0° above the horizontal. The car accelerates …
  2. physics - Energy

    An ore car of mass 41000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 9.6 m lower vertically, is a horizontally situated spring with constant 4.7 × 10^ 5 N/m. The acceleration of gravity …
  3. Physics

    You are hiking out in California and come across an abandoned mine shaft. Wondering how deep the mine shaft is you toss a rock in and it takes 5.1 seconds before hitting the bottom. How deep is the mine shaft in meters?
  4. physics

    a stone is dropped from rest at the top of a mine shaft. it takes 59 s for a stone to fall to the bottom of a mine shaft. how deep is the shaft?
  5. physics

    An ore car of mass 37000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 28 m lower vertically, is a horizontally situated spring with constant 2.8 × 10 5 N/m. The acceleration of gravity is …
  6. Physics

    An ore car of mass 37000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 9.9 m lower vertically, is a horizontally situated spring with constant 3.9 × 10 5 N/m. The acceleration of gravity is …
  7. physics

    An ore car of mass 36000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 21 m lower vertically, is a horizontally situated spring with constant5.1×10^5N/m.The acceleration of gravity is 9.8 …
  8. physics

    A stone is dropped from rest at the top of a mine shaft. It takes 58 s for a stone to fall to the bottom of a mine shaft. How deep is the shaft?
  9. Physics

    An ore car of mass 44000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 26 m lower vertically, is a horizontally situated spring with constant 4.5 × 105 N/m. The acceleration of gravity is …
  10. physics

    An ore car of mass 41000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 29 m lower vertically, is a horizontally situated spring with constant 4.1 × 105 N/m. The acceleration of gravity is …

More Similar Questions