Work, Power, and Simple Machines

What do you call multiple pulleys working together?

• multi-pulley

• Block-and-Tackle

• Mechanical Advantage

The amount the resistance end of a lever moves is called the _________.

• Output Distance

• Output Work

• Output Force

The factor by which a simple machine makes doing work feel easier.

• Input Force

• Efficiency

• Mechanical Advantage

The rate at which work is done

• Output Work

• Power

• Joules

The quick way to find the mechanical advantage of a block-and-tackle

• Count the pulleys

• Measure the input arm

• Multiply the length by the height

Is walking up a flight of stairs doing "work?"

• Yes

• No

• Austin and Connor

Tags

NGSS.MS-PS3-5

Is carrying a box across the room doing "work?"

• Yes

• No

• Juan and Teo

What type of simple machine is this?

• 1st class lever

• 2nd class lever

• Block-and-Tackle

Simple machines make WORK feel easier by...

• Using less power

• Reducing friction

• Trading force for distance

The unit for work and Energy

• Watt

• Joule

• Newton