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Homework Help: Pulling block up incline with winch.

  1. Sep 29, 2008 #1
    1. The problem statement, all variables and given/known data
    A 1200 kg block of granite is pulled up an incline that has an angle of inclination q = 23 ° with a constant speed of 1.23 m/s by a steam winch (see Figure). The coefficient of kinetic friction between the block and the incline is 0.14. How much power must be supplied by the winch?



    2. Relevant equations

    (That I know of) P=TxV

    3. The attempt at a solution
    I need help finding the tension in the cable between the winch and block. Thanks in advance!
     
  2. jcsd
  3. Sep 29, 2008 #2

    LowlyPion

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    Homework Helper

    Welcome to PF.

    Draw a force diagram. What forces are there? What forces are there along the line of the Tension in the cable that needs to be overcome?
     
  4. Sep 29, 2008 #3
    Forces in the X direction are friction and weight (MG) and of course T which we need to find. I', just stuck on how to use these.
     
  5. Sep 29, 2008 #4

    LowlyPion

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    OK. Write a force equation. What must be balanced if it is not accelerating, but moving at constant speed?
     
  6. Sep 29, 2008 #5
    The force of friction and mg and the pulling force.
     
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