- #1
teggenspiller
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Homework Statement
Two ramps, one steeper than the other, are available to move a heavy crate from the ground onto the bed of a truck. In the absence of friction, it takes more force to push the crate up the steeper ramp. Does this mean it also takes more work to raise the crate onto the bed of the truck along the steeper ramp? </b>Taking friction into account, which ramp requires less work for pushing the crate on the truck? </b>
Homework Equations
The Attempt at a Solution
IT all depends. The angle of the inclination actually has nothing to do with the amount of work needed to lift an object onto it, only the direction of the force that is causing the displacement has an effect.
However, assuming that more force is required to push an object up the steeper hill, and since force, displacement and the angle between the force and displacement vector are directly proportional, the more force would cause the entire work (J) to be higher. The angle, however, would not have an effect.
Taking friction into account, the less steep hill requires less work
and that's where I am stuck..