- #1
helpmedude
Homework Statement
What power must a woman expend on a 50 kg wagon that she is pulling up a hill at a speed of 0.40 m/s. The hill makes an angle of 20° with the horizontal and the coefficient of friction is 0.35. <<<this was copied and pasted straight from web ct
Homework Equations
Fnet=Fp-Ffr
P=Fvcostheta
p=w/t
The Attempt at a Solution
I haven't really gotten anywhere I just don't see how I could find power without knowing any time or distance and since the woman is moving at a constant velocity the net force must be zero. right? however I know if an object is moved work is done. and considering there is no distance given I don't see how I could find a time. I have a feeling I am missing something very obvious or it is unsolvable. I am stuck and I am in a distance course and my instructor doesn't seem to want to check his email so I am getting a bit stressed out whihc as you know tends to cloud the mind this is the last question of my assignment whihc is due tonight please help me.