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Homework Help: 1982 Physics Problem B

  1. Jun 2, 2008 #1
    [SOLVED] 1982 Physics Problem B

    A crane is used to hoist a load of mass m1=500 kilograms. The Load is suspended by a cable from a hook of mass m2=50 kilograms, as shown in the diagram above. The load is lifted upward at a constant acceleration of 2 m/s^2.


    b)Determine the Tension T1 in the lower cable and the tension T2 in the upper cable as the hook and load are accelerated upward at 2 m/s^2. Use g=10 m/s^2.

    FYI: this is the 1982 Question B from an AP Test. So if you can find a link that has an explanation, that would be great. Or, you can solve it that would also be wonderful!! thank you soo much
     
  2. jcsd
  3. Jun 2, 2008 #2

    rock.freak667

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    It'd be nice to see the diagram as,it may show some information not stated and also,you can take a stab at it and we can try to help you out with it.
     
  4. Jun 2, 2008 #3
    i don't have a scanner, so i'm sorry but i don't know how i can show you the diagram. i tried to do this problem, i really need help
     
  5. Jun 2, 2008 #4
    erm i sent a pic to you
    let me know if you can help
     
  6. Jun 2, 2008 #5
    hey rock freak
    i figured the second part
    it's the first part i'm having trouble with
     
  7. Jun 2, 2008 #6

    rock.freak667

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    What answers did you get for the 2nd part?

    EDIT: well to do the 2nd part,you'd need to know how the forces are acting. Unless you just guessed. Did you?

    physics4-1.jpg
     
    Last edited: Jun 2, 2008
  8. Jun 2, 2008 #7
    for the second part i used

    T1= M1 (g+a)

    T2= (M1+M2)(g+a)
     
  9. Jun 2, 2008 #8
    it's the first part that i'm not sure about
    i get that the force of gravity points down
    but what other forces are on it?
     
  10. Jun 2, 2008 #9
    Tension forces.
     
  11. Jun 2, 2008 #10

    rock.freak667

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    The only forces to consider are weight and tension. Weight acts downwards so tension must act upwards.
     
  12. Jun 2, 2008 #11
    thanks guys!
    much appreciated

    maybe you all can help me with the resistor problem?
     
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