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Homework Help: Work done by tension

  1. Oct 4, 2011 #1
    ques: how fast block moves after sliding 100 cm on incline?[by energy conservation]
    A frictional force of 0.5 n acts

    doubt: should work done by tension be accounted?

    Attached Files:

  2. jcsd
  3. Oct 5, 2011 #2
    Did you give us all the information that you were given?
  4. Oct 6, 2011 #3
    yes i did .... i just want to know if tension does work
  5. Oct 6, 2011 #4
    Before the block moves you can set the total energy to zero, after the block has moved 1m the total energy is still zero and is,

    0 = .5N X 1m + mV^2/2 - mgh = force times distance + kinetic energy - potential energy

    where h is the vertical distance the block falls.
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