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I need a lot of help.

  1. Oct 4, 2010 #1
    I need a lot of help. :(

    My assignment is attached. 7 Questions. I got number one, that's it. It's due on Friday.


    Please someone help me with this. I need to understand it.

    Help me out in part is fine. I don't have questions 2-7 done.


    Thanks
     

    Attached Files:

  2. jcsd
  3. Oct 4, 2010 #2
    Re: I need a lot of help. :(

    As per PF guidelines, you must show your attempt at the solutions before we can provide you with any help.

    Jared
     
  4. Oct 4, 2010 #3
    Re: I need a lot of help. :(

    Fair enough.

    OK for 7.

    I set up free body diagrams.

    FBD of mass 1 has
    - force of friction = 9.8 N pulling it left
    - Normal force upwards
    - Fg downwards
    - tension pulling it right

    FBD of mass 2
    - friction directed upwards at 35 degrees
    - tension also directed upwards at 35 degrees
    - Fg perpendicular to the surface (not perpendicular to teh slope)
    - normal force perpendicular to slope

    X Direction for mass 1
    Ftension-Ffriction=ma
    Ft=9.8+ma

    y Direction for mass 1
    Fnormal-Fgravity=0
    therefore Fn=Fg


    Now I don't know what to do
     
  5. Oct 4, 2010 #4
    Re: I need a lot of help. :(

    Try to now sum the forces for the other object so that you can find the tension.
     
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