weight of object is 3000lbs, incline plane is 40ft, degree the angle of the incline plane makes is 60 degrees. explain how you would do this problem. its AGAINST THE PLANE so don't say that you use the mgh formula. lol this problem requires mechanical advantage, fidi=fodo and sineHow do you find work done against an incline plane?If it's frictionless, then mgh still works fine.
You can either look at the change in potential energy of the object (mgh) or force times distance. If you push it at a constant speed, then your force must equal the component of the weight along the slope (mgsin60). The distance pushed is d, so your work would be mgdsin60.
But h is dsin60, so mgdsin60 = mgh. QED.
Energy problems are often simpler than you think, which makes them hard because you try to find a harder solution that either doesn't exist or is, well, HARDER.
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