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komarxian
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Homework Statement
A skier of mass 70 kg is pulled up a slope by a motor-drive cable.
a. How much work is required to pull him 60 m up a 30° slope (assumed frictionless) at a constant speed of 2 m/s?
b. What power must a motor have to perform this task?
Help would be greatly appreciated!
Homework Equations
The Attempt at a Solution
I will be attaching pictures in a reply to this in a minute, and these pictures will have my work. I have no idea if I did it correctly, as my textbook does not have an answer for this proble, but I don't feel totally clueless, so that's good?
The thing is, there's no acceleration, so it's kind of confusing, because the normal W= Fd doesn't seem to work because I keep getting 0 N, because a=0, but when I solve using ΔU, I actually get something, but once again, I have no clue if it is correct. Any help is greatly appreciated!