6. describe an example of a new technology that you have seen recently advertised or sold in stores.

7. how would you set up a lever so that it has a mechanical advantage greater than 1? include the terms input arm, output arm, and fulcrum in your answer.

8. draw diagrams that show a seesaw at equilibrium and at nonequilibrium. include captions that describe each of your diagrams. be sure to discuss forces and motion in your captions.
9. why are levers considered to be simple machines?

10. which configuration is the best lever for lifting the rock?

13. how are force and distance related to how a lever works?

14. would you rather use a machine that has a mechanical advantage of 1 or a machine that has a mechanical advantage of more than 1? explain your reasoning in your answer.
15. you have a kit of gears, which contains many gears with 12, 24, and 36 teeth. can you make a clock mechanism with a 12: 1 gear ratio? why or why not?