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An inclined plane is a slanted surface that makes it easier to move an object upward than lifting straight up. It is easier to move an object up a more gradual, longer inclined plane than a steeper, shorter one. Inclined planes reduce the effort needed to move something over a long distance or raise it higher. A screw is an inclined plane wrapped around a pole or rod, and is used for holding things together, drilling, and lifting. A wedge is two inclined planes back to back, used for cutting, chopping, splitting things apart, and holding things in place. Common examples of each include ramps, stairs, drills, wood screws, axes, and knives.












