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An object under water has mass 100 kg. What is the buoyand force?

  1. Oct 9, 2012 #1
    An object is completely under water, hovering, neither rising nor sinking. Its mass is
    100 kg. What is the buoyant force on the object, in newtons?
    (a) 12,460
    (b) 17,860
    (c) 16,080
    (d) 9800
    (e) none of these

    Since buoyant force is equal to the weight of the object, I figured I could plug it into the equation w=mg
    w=100 x 9.8
    which would give me 980...
    Am I doing something wrong?
     
  2. jcsd
  3. Oct 9, 2012 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Nothing wrong with your work. I suspect a typo in the problem statement. Maybe they meant 1000 kg, not 100.
     
  4. Oct 9, 2012 #3
    okay, thank you!! :)
     
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