Monday
September 1, 2014

Homework Help: physics

Posted by Jessi on Monday, March 2, 2009 at 12:49pm.

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.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

PHYSICS HELPPPP - A loaded ore car has a mass of 880 kg and rolls on rails with ...
physics - An ore car of mass 37000 kg starts from rest and rolls downhill on ...
physics - An ore car of mass 36000 kg starts from rest and rolls downhill on ...
Physics - An ore car of mass 37000 kg starts from rest and rolls downhill on ...
physics - Energy - An ore car of mass 41000 kg starts from rest and rolls ...
physics - An ore car of mass 42000 kg starts from rest and rolls downhill on ...
physics - A 7000-kg freight car rolls along rails with negligible friction. The ...
physics - A stone is dropped from rest at the top of a mine shaft. It takes 58 s...
physics - a stone is dropped from rest at the top of a mine shaft. it takes 59 s...
Physics helpp please! - A 8000-kg freight car rolls along rails with negligible ...

Search
Members