Work, Power, and Simple Machines

What is power?

• transfer a force through a distance
• the rate of speed 
• the rate of work being done
• transfer of space over time

Tags

NGSS.MS-PS3-5

What is an example of an inclined plane?

• crane
• slide
• bike
• see-saw

What is an example of a wheel and axle?

• ax
• light bulb
• skateboard ramp
• bus tire

What is an example of a pulley?

• slide
• flag pole
• ax
• chapstick

What is an example of a screw?

• arm
• ax
• light bulb
• ramp

What is a screw?

• means attracted to a magnet
• an inclined plane that is wrapped around an axle
• stiff bar that rests on a fulcrum
• made of 2 inclined planes that are back to back

What is a lever?

• made of 2 inclined planes that are back to back
• means attracted to a magnet
• stiff bar that rests on a fulcrum
• made of 2 inclined planes that are back to back

Stairs

• wedge
• pulley
• inclined plane
• wheel and axle

Tags

NGSS.MS-ETS1-1

This device

• wedge
• lever
• incline plane
• wheel and axle

Tags

NGSS.MS-PS2-1

The fixed point on the lever is called 

• load
• resistance
• bar
• fulcrum