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# Jeopardy review mfe ch 4

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### Jeopardy review mfe ch 4

1. 1. Chapter 4: Work it Power Rangers Go cry to MA It’s only machine wastelan d KISS 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5
2. 2. KISS 4 • A _____________ is a lever that rotates.
3. 3. KISS 3 • A seesaw is a _______ class lever that has an MA of _____
4. 4. It’s Only Machine Wasteland 2 • A machine that requires 200 Joules of work and puts out 50 Joules of work is how efficient?
5. 5. It’s Only Machine Wasteland 1 • According to the current laws of physics, cars in the future may have 100% efficiency.
6. 6. Go Cry to MA 3 • If you apply 100 N of force to a machine and the machine exerts 400 N on the object, what is the MA of the machine?
7. 7. Go Cry to MA 2 • What 3 things can machines do to make work easier?
8. 8. Go Cry to MA 1 • A machine’s actual MA is always greater than its ideal MA. (T/F?)
9. 9. Power Rangers 1 • Equation, Units and definition of Power
10. 10. Kiss 5 • To increase an inclined plane’s actual MA, you______________
11. 11. KISS 2 • A______________ is a cutting tool made from a moving inclined plane.
12. 12. Power Rangers 2 • If you apply a force of 100 N for 5 m and spend 2 minutes doing it, you use ___ ___ of power.
13. 13. KISS 1 • A______________is an inclined plane wrapped around a cylinder.
14. 14. Work it 3 • Lifting a 2 kg object 3m up requires how many Joules of energy
15. 15. Work it 4 • The thumbtacks holding up the posters up in this room are doing a very small amount of work T/F?
16. 16. Wasteland 2 • A machine that requires 200 J of work and puts out 50 J of work is how efficient?
17. 17. Power rangers 3 • Doing a certain amount of work in less time means you use less power T/F?
18. 18. 1 pt: Work it • Equation, Definition and Units for Work
19. 19. 2 pts: work it • If you push a 3,000 N piano sideways a distance of 2 m, how much work was done?
20. 20. Wasteland 3 • Describe one way to make a pulley system more efficient.
21. 21. Go cry to MA 4 • A machine with a mechanical advantage between what two numbers will multiply distance?