Lesson 3: How are work and Motion related?

Lesson 3: How are work and Motion related?

Work – the result of a force MOVING an object.

Lesson 3: How are work and Motion related?

When you push or pull something and it moves you have done work.

Lesson 3: How are work and Motion related?

If you push or pull on something and it does not move you have not done work.

Lesson 3: How are work and Motion related?

Simple Machine – a machine made of one or two parts.

Simple Machines make work easier.

Types of Simple Machines

Inclined PlaneA flat surface with one side higher than the other. (a ramp)

Types of Simple Machines

Wheel and AxleA wheel attached to a rod.

Types of Simple Machines

WedgeA simple machine with slanted sides.

Types of Simple Machines

LeverA stiff bar that rests on a support called a fulcrum which lifts or moves loads. (the longer your lever the easier the lift)

Types of Simple Machines

ScrewAn incline plane wrapped around a rod.

Types of Simple Machines

Pulley A simple machine that uses a rope and a wheel to move an object. (The more pulleys, the longer the rope, the easier it is to pull)

Lesson 3: How are work and Motion related?

Compound Machine - a machine made of two or more simple machine.

Lesson 3: How are work and Motion related?

Complex Machine - a machine made up of many compound and complex machines.