Wheels, Pulleys and Gears

What are wheels?

What do wheels act as?

What is the axle?

What is the rim?

How does the wheel work?

How can you increase the distance covered by the wheel?

How do electric fans work?

What is the history of the wheel?

What are pulleys?

How do you increase the force applied to a pulley?

What happens if you use 2 pulleys?

How can you produce a greater mechanical advantage?

What is the block and tackle arrangement?

What are gears?

What are gears interlocking together called?

How do gears work?

What is the gear that supplies the force is called?

What is the gear that is connected to the driving gear called?

How do you find out the gear ratio?