## Work, Energy, Power and Simple Machines Review

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1. 4. THE ABILITY TO DO WORK
2. 6. MEASURES THE RATE AT WHICH WORK IS DONE IN A CERTAIN PERIOD OF TIME.
3. 8. A WHEEL HAS A RADIUS OF 12 INCHES. THE AXLE HAS A RADIUS OF 2 INCHES. WHAT IS THE MA?
4. 10. _________ PLANE-SIMPLE MACHINE THAT IS A SLOPED SURFACE, OR RAMP.
5. 11. ______ FORCE-FORCE APPLIED TO A MACHINE.
6. 13. ABILITY OF A MACHINE TO CONVERT WORK INPUT INTO WORK OUTPUT.
7. 17. _______FORCE-THE FORCE THAT A MACHINE MUST OVERCOME.
8. 18. INCLINED PLANE WRAPPED AROUND A SHAFT.
9. 20. STORED ENERGY
10. 22. THE UNIT OF FORCE
11. 23. TWO NEWTONS APPLIED OVER 4 METERS.
12. 24. YOU ARE ABLE TO LIFT A 50 NEWTON BOX 3 METERS ONTO A TRUCK USING A RAMP. THE RAMP ALLOWS YOU TO PUSH THE BOX AT 20 NEWTONS, OVER 8 METERS. WHAT IS THE PERCENT EFFICIENCY OF THE RAMP?
13. 27. FORCE OUTPUT DIVIDED BY FORCE INPUT.
14. 29. A SURFACE, SUCH AS A WHEEL, THAT REDIRECTS FORCE USING A ROPE.
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1. 1. ________ ADVANTAGE-COMPARISON OF THE INPUT FORCE TO THE OUTPUT FORCE OF A MACHINE.
2. 2. A FORCE PRESENT IN ALL MOVING OBJECTS; OPPOSES MOTION.
3. 3. OCCURS WHEN A FORCE IS APPLIED OVER A DISTANCE.
4. 5. A PULLEY SYSTEM ALLOWS SOMEONE TO LIFT A 100 NEWTON BOX UP 5 METERS WITH 20 NEWTONS OF FORCE. WHAT IS THE MA?
5. 7. MOVING INCLINED PLANE WITH ONE OR TWO SLOPING SIDES.
6. 9. THE UNIT OF WORK
7. 12. THE POINT ABOUT WHICH A LEVER PIVOTS.
8. 14. YOU RIDE YOUR BIKE 1000 METERS TO TOWN. YOU USE 5 NEWTONS OF FORCE FOR EACH METER. HOW MUCH WORK DID YOU DO?
9. 15. THE UNIT OF THE RATE AT WHICH WORK IS DONE.
10. 16. MADE FROM A ROD OR PLANK THAT PIVOTS ABOUT A POINT.
11. 19. THE ENERGY OF MOTION
12. 21. ________ MACHINE-WORKS WITH ONLY ONE MOTION, SUCH AS AN INCLINED PLANE, LEVER, ETC.
13. 25. ______ MACHINE-COMBINATION OF TWO OR MORE MACHINES.
14. 26. A PULLEY SYSTEM LIFTS A 10 NEWTON BOX 5 METERS. HOW MANY JOULES OF WORK ARE DONE?
15. 28. WHEEL AND ____-SIMPLE MACHINE MADE FROM TWO RIGIDLY ATTACHED WHEELS THAT ROTATE TOGETHER.