Simple Machines:Levers

What type of machine is a lever?

• A simple machine

• A complex machine

• A type of gear

• A type of wheel

What are the three main parts of a lever that determine its class?

• Force, weight, and pivot

• Effort, load, and fulcrum

• Push, pull, and balance

• Input, output, and support

Which of these items is an example of a first-class lever?

• A wheelbarrow

• A nutcracker

• Scissors

• A rake

In a third-class lever, which component is always located in the middle?

• The fulcrum

• The load

• The effort

• The pivot point