Inclined Plane

Imagine lifting a heavy box straight up to load it into a moving truck — it takes a lot of strength all at once!

But using a ramp makes it feel much easier. That ramp is an inclined plane!

An inclined plane is a flat surface set at an angle. It’s a simple machine that helps you do the same job with less effort.

Work equals force multiplied by distance. Since the work of lifting the box is the same, increasing the distance reduces the force required.

An inclined plane achieves this by spreading the lift over a longer path, so less force is needed at any moment.

The steeper the ramp, the harder you have to push. A longer, less steep ramp spreads the push over more distance, so each moment needs less force — and that’s the mechanical advantage.

Mechanical advantage is the ratio of the force the machine puts out to the force you put in.

For an inclined plane, the mechanical advantage is greater than 1. That means it multiplies your force and makes the job easier.

You’ll find inclined planes everywhere: ramps, slides, staircases, and even inside a screw.