Simple machines

a machine with few or no moving parts to which you apply just one force.

• Work

• Simple Machine

• Fulcrum

• Lever

a bar that pivots on a fixed point.

• Simple Machine

• Work

• Lever

• Fulcrum

the fixed balance point on a lever.

• Simple Machine

• Work

• Fulcrum

• Lever

A simple machine made of a wheel with a line around it.

• Lever

• Pulley

• Wheel and Axle

• Wedge

a simple machine made of a wheel and an axle that turn together

• Pulley

• Wedge

• Wheel and Axle

• Inclined plane

a simple machine that is a slanted surface

• Inclined plane

• Pulley

• Wedge

• Lever

A simple machine made of a post with an inclined plane wrapped around it

• Wedge

• Screw

• Lever

• Wheel and axle

A simple machine made of two inclined planes placed back to back-to-back

• Wheel and axle

• Wedge

• Lever

• Pulley

Which of the following objects acts as a lever when pulling a nail?

• Handle of the hammer

• Board

• Head of the nail

• Point of the nail

Scissors are an example of a complex machine. Which of the following simple machines are combined to make scissors?

• Lever and gear

• Gear and pulley

• Lever and wedge

• Wedge and pulley