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anonymous

  • one year ago

The man pictured (I will draw!) is standing while holding up boxes. which of the following statements is true? A. The man is doing work because he is exerting force to hold the boxes up. B. The man is doing work because the boxes are about 1 m high. C. The man is not doing work because the boxes are not moving. D. The man is not doing work because he is not exerting a force.

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  1. anonymous
    • one year ago
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    |dw:1433089378391:dw|

  2. anonymous
    • one year ago
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    haha bad drawing :P sorry but basically a man holding two boxes!!

  3. Michele_Laino
    • one year ago
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    Hint: If there is no displacement, then the the work made by the man, is: \[W = Fs = F \times 0 = ...\]

  4. anonymous
    • one year ago
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    ohh so 0? he is not doing work?

  5. Michele_Laino
    • one year ago
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    correct!

  6. Michele_Laino
    • one year ago
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    so, what is the right option?

  7. anonymous
    • one year ago
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    ooh yay!! would it be choice D then?

  8. Michele_Laino
    • one year ago
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    ok!

  9. anonymous
    • one year ago
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    yay! that is the correct option? :O

  10. Michele_Laino
    • one year ago
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    please wait: It is option C

  11. anonymous
    • one year ago
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    ohhh okay.. darn :( how come it is C?

  12. Michele_Laino
    • one year ago
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    because the boxes are at rest, so the displacement over time is zero

  13. anonymous
    • one year ago
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    ohh okay!! thank you!!

  14. Michele_Laino
    • one year ago
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    :)

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