How does using a ramp make work easier when loading a piano onto a truck three feet above the ground?

It allows a larger force to be applied over a shorter distance.
It allows a larger force to be applied over a longer distance.
It allows a smaller force to be applied over a shorter distance.
It allows a smaller force to be applied over a longer distance.

Question

How does using a ramp make work easier when loading a piano onto a truck three feet above the ground?

It allows a larger force to be applied over a shorter distance.
It allows a larger force to be applied over a longer distance.
It allows a smaller force to be applied over a shorter distance.
It allows a smaller force to be applied over a longer distance.

alones · Answer

Any ideas?

devin · Answer

4!
It allows a smaller force over a longer distance! 

Basically, you don't have to pick it up and put it over your head to put it on a truck.