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Homework Help: Work Done by Gravity on an Incline

  1. Nov 5, 2012 #1
    The formula is m*g*h which translates to m*g*d*sinθ right? I have it written down as m*g*d*cosθ on my formula chart for some reason which doesn't make sense, and I want to reassure myself.
  2. jcsd
  3. Nov 5, 2012 #2


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    Yes, where theta is the angle the incline makes with the horizontal. Draw the right triangle with height h and hypotenuse d, and use soh-cah-toa.....but what is the sign of the work done, if the object is travelling up the plane? Down the plane?
  4. Nov 5, 2012 #3
    Okay then. Thanks.
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