Levers Simple Machines

Which of the following is a characteristic of all levers?

• They have a wheel

• They have a rigid arm that pivots

• They are powered by electricity

• They are made of metal

What is the position of the fulcrum in a first-class lever?

• Between the input force and the output force

• At the end of the lever

• Next to the input force

• Next to the output force

What is an example of a second-class lever?

• Scissors

• Wheelbarrow

• Tweezers

• Fishing rod

Which of the following is NOT part of the lever family?

• Simple lever

• Pulley

• Screw

• Wheel and axle

This is an example of...

• 1st Class Lever

• 2nd Class Lever

• 3rd Class Lever

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

This is an example of...

• 1st Class Lever

• 2nd Class Lever

• 3rd Class Lever

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

This is an example of...

• 1st Class Lever

• 2nd Class Lever

• 3rd Class Lever

Tags

NGSS.MS-PS2-2

What is the mechanical advantage of a third-class lever?

• Greater than one

• Less than one

• Equal to one

• Zero

How do third-class levers multiply force?

• By increasing speed

• By multiplying distance

• By reducing friction

• By increasing weight

What is a simple machine?

• A complex electronic device

• A basic machine that makes work easier

• A tool that stores data

• A device that generates light

Tags

NGSS.MS-PS2-2