- #1
Spartan Erik
- 31
- 0
Homework Statement
A man pushes a create which weighs 75 N upward along a frictionless slope that makes an angle of 30° with the horizontal. The force he exerts is parallel to the slope. If the speed of the crate increases at a rate of 0.5m/s^2, then the work done by the man while moving the crate a distance of 1.5m is:
-62J, +62J, -41J, +41J, none of the above
Homework Equations
W = Fdcos(theta)
W(done by gravity)= mgdcos(theta)
The Attempt at a Solution
I'm not sure exactly how to approach this problem as they supply an increasing acceleration of 0.5m/s^2. Otherwise I would just apply W = Fdcos(theta). I also know that gravity has an effect on this, but I'm not sure how to include it in this situation