A force is a pull or a push. We need it to move objects.

Objects move in the direction we push or pull.

Example: To open or close a door.

It pulls objects towards the centre

of the Earth.

Magnets pull or push objects.

One object applies a force to another.

Pushing, pulling and lifting are forms of work

It is a bar that changes the

weight of objects

It is a wheel with a rope that lifts

an object. It is like a ramp which reduces the

force.

They are used to cut or separate

A wheel spins

around an axle moving

objects

A screw can move itself or another

object

They are 2 or more simple machines working together.

Bicycles and clocks have screws, wheels spin o axles, lever, etc.