Simple Machines

Using a lever, Joe is able to lift a 10,000 N car off of the ground with a force of 1000 N. What is the mechanical advantage of the lever?

• 1
• 10
• 100
• 1000

Tags

NGSS.MS-PS2-2

How does a single fixed puled, like the one seen here, help you do work?

• changes the direction of the force
• increases the amount of applied force
• decreases the amount of applied force
• allows you to pull the rope a shorter distance

A machine is a device that____________.

• changes either the magnitude or direction of force
• always makes lifting objects require more effort
• changes only magnitude of the force
• Changes only direction of the force

Tags

NGSS.MS-ETS1-1

A lever and fulcrum are used to lift a fallen tree, which has a weight of 480 N. If the lever has a mechanical advantage of 5.5, what is the input force that will begin lifting the tree off the ground?

• 5.5 N
• 40.7 N
• 87.3 N
• 2640 N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Name the class of lever.

• Class 1
• Class 2
• Class 3
• Class president

What is the mechanical advantage for this lever?

• 1
• 2
• 1/2
• 8

What is the mechanical advantage for the inclined plane?

• 5
• 1/5
• 45
• 17

Tags

NGSS.MS-ETS1-1

What is the input force?

• 50 N
• 4 m
• 12 m
• 150 N

Tags

NGSS.MS-PS2-2

What is the output force?

• 12 m
• 50 N
• 150 N
• 4 m

Tags

NGSS.HS-PS2-1

How do you calculate the MA of an inclined plane?

• height / length
• input X  height
• length / height
• output X length