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Units of a gradient

  1. Apr 15, 2006 #1
    now, this is a rather basic question, but, i cant seem to find the answer...

    so anyhow, i always thought that a gradient diddent need units and was just used to compare the change between two things, but i think i may be wrong.

    so, if you are plotting extension (m) over force (n) for a hooke's law graph, what unit do you use? or am i right and you dont need one?
  2. jcsd
  3. Apr 15, 2006 #2
    It's Newton/metre. This corresponds to the unit of the constant in Hooke's law.Take another example of plotting the position against time. The gradient gives you the velocity which has units m/s.
  4. Apr 15, 2006 #3
    thanks for the quick reply!

    so, (just to confirm) that would be N/m or Nm^-1
  5. Apr 15, 2006 #4
    Yes, both refer to the same thing.
  6. Apr 15, 2006 #5
    thanks very much!
  7. Apr 16, 2006 #6
    i was always having that problem as well. thanks for clearing it up
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