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Simple Machines. Inclined Plane. Definition: A slanting surface connecting a lower level to a higher level How it makes work easier: It is used to help things move up or down distances Examples: Ramps, stairs, slide, escalator, slope. Wedge .

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inclined plane
Inclined Plane

Definition: A slanting surface connecting a lower level to a higher level

How it makes work easier: It is used to help things move up or down distances

Examples: Ramps, stairs, slide, escalator, slope

wedge
Wedge

Definition: An object with at least one slanting side ending in a sharp edge, 2 inclined planes put together

How it helps make work easier: Cuts or spreads an object apart or fastens objects

Examples: Doorstop, axe, thumbtack, knife, snowplow, chisel

screw
Screw

Definition: An inclined plane wrapped around a pole/cylinder

How it makes work easier: Holds things together or lifts things

Examples: Screw, propeller, fan, jar lid, drill

wheel and axle
Wheel and Axle

Definition: A wheel with a rod through its center, both parts move together

How it makes work easier: Lifts or moves loads across distances

Examples: Wagon wheel, doorknob, car, bike

pulley
Pulley

Definition: Cable or rope wrapped around a grooved wheel. As the wheel rotates, the cord moves

How it makes work easier: Helps lift things up and down or move them across

Examples: Flagpole, clothesline, tow truck, crane

lever
Lever

Definition – A stiff bar that rests on a support called a fulcrum. It pivots (turns) against the fulcrum. There are 3 types, and the type is determined by where the fulcrum is. The types are 1st class, 2nd class, and 3rd class.

How it makes work easier: It lifts and moves loads.

1 st class
1st class

Examples: seesaw, scissors, crowbar

2 nd class lever
2nd class lever

Examples: wheelbarrow, nutcracker

3 rd class lever
3rd class lever

Examples: broom, shovel, bat

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