Physics Chapter 13 - Picture Problems

Front - Picture & Question

 

Back - Answer
1. This apple peeler is a compound machine. List the simple machines used to make it work.

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2. A roller coaster car is ready to go from the hill on the left to the hill on the right. Will it make it up to the top of the second hill? Why or why not?

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3. A 0.5 kg  frog jumps from the bank over to the lily pad with an acceleration of 3m/s/s. How much force did the frog exert on the bank when it made its jump?

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4. Plants take in what kind of energy and produce what kind of energy?

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5. 1) What is the mechanical advantage of this inclined plane?

2) How much work is required to move the 72N weight to the top of the ramp?

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6. A machine uses 55 joules of work to lift an 8N object 5 meters. How much energy was expended through heat?

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7. Describe Potential energy values at W, X, Y, and Z.

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8. If the sheet of notebook paper is lying on the table and not moving, are the forces balanced or unbalanced?

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9. What type of energy  transformation is pictured here?

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10. What is the mechanical advantage of this pulley system and why?

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11. What is the mechanical advantage of this pulley system and why?

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12. What is the mechanical advantage of this pulley system?

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13. What is the mechanical advantage of this pulley system?

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14. Consider that the arrows are pointing to the top of a hill. If you took the zigzag route would you do less work?

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15. If this man is NOT able to move the rock, even though he is struggling to move it.... has he done any  WORK?

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16. The man is holding the bar bell. Is he doing any WORK?

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17. If the arrow represents Work Input (Wi) and the weight of the cart is Work Output (Wo), which is greater, Wi or Wo?

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18. What class of lever are represented by the alligator's jaws and why?
NOTE: The fulcrum is located at the blue dot.

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19. What class of lever are represented by the can opener and why?
NOTE: The fulcrum is located at the blue dot.

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20. What class lever is represented by the spatula and why?
NOTE: The fulcrum is located at the blue dot.

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21. What class lever is represented by the horse drawn cart and why?
 NOTE: The fulcrum is located at the blue dot.

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22. Do all four of these pulleys do the same amount of work?

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23. If each box weighs 1kg and you move the pallet of boxes 5 meters, how much work have you done?

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24. For this diagram representing a swing, consider that A and C are at the same height. What is the KE value at A, B, & C?

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25. The weight lifter is moving the barbells from the ground to a position over his head. Is he doing WORK?

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