A physics professor is pushed up a ramp inclined upward at an angle theta above the horizontal as he sits in his desk chair that slides on frictionless rollers. The combined mass of the professor and chair is m. He is pushed a distance x along the incline by a group of students who together exert a constant horizontal force of F. The professor's speed at the bottom of the ramp is v.
Use the work-energy theorem to find his speed at the top of the ramp.
I know W=K2-K1 and K=.5mv'2 but i dont understand
would it be K= .5mv'2 sin(theta)
I also know F=-kx but how would i equate that for this problem/
please help!
2007-11-13
19:04:51
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2 answers
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asked by
Anonymous
in
Science & Mathematics
➔ Physics