Simple Machines, MA, KE and PE

Which is not a type of simple machine?

• spring
• screw
• pulley
• wedge

Flagpole

• wedge
• pulley
• incline plane
• wheel and axle

Stairs

• wedge
• pulley
• inclined plane
• wheel and axle

Lightbulb

• wedge
• pulley
• incline plane
• screw

How does a movable pulley make lifting objects easier? 

• The amount of force needed is doubled
• the amount of force needed is increased
• the amount of force needed is reduced
• the amount of force needed stays the same

Where should the fulcrum be placed in order for the student to use the least amount of effort possible? 

• point A
• point B
• point C
• point D

If you use a crowbar to get the lid off of a bucket, what simple machine are you using?

• Inclined Plane
• Pulley
• Wheel and Axle
• Lever

Stored energy that an object has due to its position or chemical composition is...

• Potential
• Kinetic
• Mechanical

What type of energy is in this picture?

• Kinetic
• Potential
• Electromagnetic

1/2 mv²

• KE
• PE
• Work
• Power