levers

The (a)   is the point at which a lever pivots

The (a)   is the point at which a lever pivots

A see saw is an example of a:

• 1st class lever
• 2nd class lever
• 3rd class lever

A wheelbarrow is an example of a:

• 1st class lever
• 2nd class lever
• 3rd class lever

What class lever does this picture show?

• 1st

• 2nd

• 3rd

Example of third class lever is _____

• Scissors

• Wheelbarrow

• Pliers

• Human arm

What is a bar that balances on a fulcrum called?

• a ramp

• a pulley

• a lever

This baseball pitcher is demonstrating which type of lever at the shoulder?

• 1st class
• 2nd class
• 3rd class
• 4th class

Which of the following is the definition of a 'lever'?

• Double inclined plane that moves through another object

• Simple machine that uses less effort over a longer distance

• A simple machine made of a beam and fulcrum

• Spiral shaped inclined plane that's designed to cut through another substance

A first- class lever is one where the

• Load, effort and fulcrum are all on the same side as each other

• Fulcrum is directly in the middle of the effort and load

• Fulcrum is on the same end as the load

• The load is directly in between the fulcrum and effort