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(GRADE 9 SCIENCE) Equilibrium Tension Force Help Me PLease

  1. Feb 27, 2013 #1
    Hey Guys,

    Well im a freshman taking Physical Science and my teacher didn't do a good job explaining this question.

    http://prntscr.com/uf6tv <-- thats the problem and i numbered the 6 questions

    If you could answer those questions and explain how you got that it would be awesome!

    thanks
     
  2. jcsd
  3. Feb 27, 2013 #2

    rock.freak667

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    Homework Helper

    Well for starters, if the system is in equilibrium, what can you say about the sum of the forces in the both horizontal and vertical directions?

    You will need to show an attempt or at least some thoughts about how you would start the question. My hint above gives you the starting point.
     
  4. Feb 27, 2013 #3
    ok the sum needs to add up to zero..

    so that means

    #1 is 350
    #2 is 250
    #3 is 250

    i dont understand the tension force part now #4 #5 #6?
     
  5. Feb 27, 2013 #4

    BruceW

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    Homework Helper

    you've done good so far. Now #5 is just due to the definition of a pulley. It is fairly intuitive. Would we expect the tension in the rope to change as it goes over the pulley, or just stay the same? Then after that, you can consider the other forces on the block m3
     
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