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Weight & Mass

  1. Jan 12, 2009 #1
    1. The problem statement, all variables and given/known data

    A woman has a mass of 75.0kg. What is her weight on earth?

    2. Relevant equations

    Unknown.

    3. The attempt at a solution

    I've been looking in my textbook for some kind of equation or a conversion, but I cannot find it.
     
  2. jcsd
  3. Jan 12, 2009 #2

    Doc Al

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    Staff: Mentor

    Keep looking! (It has something to do with the acceleration due to gravity.)
     
  4. Jan 12, 2009 #3
    Is it possible that it is W = m * a
     
  5. Jan 12, 2009 #4

    Doc Al

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    Staff: Mentor

    Yes, where a = g.

    Read all about it: weight
     
  6. Jan 12, 2009 #5
    I'm not really sure what g is. Would I have to find for that? Should I find the gravity of earth?
     
  7. Jan 12, 2009 #6

    Doc Al

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    Staff: Mentor

    g is the acceleration due to gravity, a well-known constant (that I'm sure you're expected to know) that describes the strength of Earth's gravity near its surface. Read the link--it's there.

    What book are you using?
     
  8. Jan 12, 2009 #7
    Oh, I see. It is 9.8 m/s^2!
     
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