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Potential Energy

  1. Apr 5, 2005 #1
    A 6 kg box slides down a long, frictionless
    incline of angle 34 degrees. It starts from rest at time
    t = 0 at the top of the incline at a height 17 m
    above the ground.
    The acceleration of gravity is 9.81 m/s^2 :
    What is the original potential energy of
    the box relative to the ground?

    i just dont know what to do with the angle. the formula is U = mgy, but where does the angle come into play?
  2. jcsd
  3. Apr 5, 2005 #2
    I've seen many questions where unnecessary information is given. It's just another way questions can test your knowledge.
  4. Apr 5, 2005 #3

    u were right
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