A man is pushing a heavy crate up an inclined plane into the back of semi trailer. What can the man do to make it easier to get the crate up the ramp

B) Make the ramp longer

Explanation:

A machine is a device that makes work more easier and faster. A machine also saves time.

A ramp is a simple machine that is used to lift heavy object with a force that is lesser than the actually force needed. A ramp is in the shape of an inclined plane, which makes pushing an object easier than the required force needed.

The formula for a ramp is given by:

Force needed to push * length of the ramp = weight of object * height of ramp.

Force needed to push = (weight of object * height of ramp) / length of ramp

We can see that the force needed is inversely proportional to the ramp length. Hence for a ramp with longer length you need lesser force to raise the object.