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Gravitational potential energy

  1. Aug 4, 2009 #1
    1. The problem statement, all variables and given/known data
    A 50.0 kg carton is dragged up a low-friction plank onto the back of the truck. The length of the plank is 3.00 m and it makes an angle of 15.0ΒΊ with the ground. With respect to the bottom of the plank, the gravitational potential energy of the carton on the truck is


    2. Relevant equations
    ep=mgh


    3. The attempt at a solution
    im not sure what i have to do with the 15 degrees in order for me to solve the equation.
     
  2. jcsd
  3. Aug 4, 2009 #2

    kuruman

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    Re: work/energy

    Use the angle to find the change in height of the block. A block moving up a 30o ramp of fixed length (3.0 m) rises higher vertically than if the angle is 15o.
     
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