How does using a ramp make work easier when loading a couch onto a truck three feet above the ground?
a
It allows a smaller force to be applied over a longer distance.
b
It allows a smaller force to be applied over a shorter distance.
c
It allows a larger force to be applied over a shorter distance.
d
It allows a larger force to be applied over a longer distance.
b. It allows a smaller force to be applied over a shorter distance.
Using a ramp reduces the amount of force needed to lift the couch to the height of the truck bed by allowing it to be pushed or pulled up the inclined surface with less effort. The length of the ramp also means that the force required to lift the couch is spread out over a longer distance, making it easier to apply the necessary force.