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Work from multiple angles

  1. Mar 29, 2005 #1
    There is a work question which I am having difficulty getting.

    A 35-kg trunks is dragged 10 m up a ramp inclined at an angle of 12 degrees to the horizontal by a force of 90 N applied at an angle of 20 degrees to the ramp. At the top of the ramp, the trunk is dragged horizontally another 15 m by the same force. Find the total work done. .. Answer = 2114 J
  2. jcsd
  3. Mar 30, 2005 #2
    Its basically two problems in one. Draw two force diagrams, one for the ramp, and one for the horizontal drag. Balance the forces in each and then use superposition to find net force in each case. Then find the work done in each case and sum them.
  4. Mar 30, 2005 #3


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    or you could get USE vector sums which i believe is easier, and then u can work it out using pythagoras theorem.

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