Work, Power and Simple Machines

A ramp.

• Lever
• Inclined Plane
• Wedge
• Screw

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Mechanical Advantage:  To drive objects apart.

• Pulley
• Inclined Plane
• Wedge
• Wheel and Axle

What type of simple machine is shown here?

• Pulley
• Wheel and Axle
• Lever
• Wedge

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Mechanical Advantage:  To reduce the friction of moving something.

• Lever
• Inclined Plane
• Screw
• Wheel and Axle

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What type of simple machine is this?

• Pulley
• Screw
• Inclined Plane
• Lever

Tags

NGSS.MS-PS2-2

Two examples of a pulley...

• knife & axe blade
• lightbulb & screw
• flagpole hoist & window blinds
• catapult & teeter totter

Which of the following does a simple machine do?

• allows the users to apply less force over a longer distance
• reduce the amount of force needed to do work
• change the direction of the applied force
• all of the above

Which is an example of someone using a simple machine to do work?

• a boy runs across a football field
• a banker counts money
• a mother pushes a stroller up a ramp
• a girl eats a sandwich

An inclined plane wrapped around a rod forms this simple machine 

• lever
• pulley
• screw
• wedge 

Tags

NGSS.HS-PS2-1

A simple machine that consists a rigid bar that pivot about a fixed point

• lever
• pulley
• wheel and axle
• fulcrum