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Wheel and Axle

Inclined Plane

This consists of two circular objects of different sizes. It makes work easier because it applies more force or lifts a heavy load.

An inclined plane makes work easier because it's easier to move something to a higher or lower place.

Inertia

Newton's First Law - Objects at rest stay at rest and objects in motion stay in motion.

Friction

A force that opposes

motion.

An unbalanced force

acts on an object

causing it to be

in motion.

A balance force acts on an object causing it to be at rest.

Forces

A force is a push or a pull. There is a pushing force and a pulling force.

Lever

Screw

A bar resting on a pivot that is used to help move a heavy load.

Pulley

A screw is an incline plane wrapped around a cylinder with a wedge at the top. A screw makes work easier by holding things together.

A pulley needs a rope, chain, or belt around the groove to make it do work. A Pulley makes work easier by changing the direction of the force or multiplying the effort used

Wedge

A wedge makes work easier because when moved a wedge cuts, splits, or pries apart objects.

Six Simple Machines

Simple Machines

  • Inclined Plane
  • Wedge
  • Pulley
  • Lever
  • Wheel and Axle
  • Screw

Simple Machines help to reduce the amount of force a person must do to work.

What is work?

It is applying a force to an object in order to move it a distance.

SIMPLE MACHINES, FORCES, AND MOTION

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