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Homework Help: Help Me Please!

  1. Oct 4, 2004 #1
    In this problem (open the attachment to see the picture):

    *We assume F_1 is less than F_2
    *We assume that friction is negligible
    *We assume that the rope has a mass m_r not equal to zero

    Q1.What is the acceleration? Choose a coordinate system and include the
    direction of the acceleration in your answer.

    Q2.What is the force exerted on mass 1 by the rope, T_1?
    Q3.What is the force exerted on mass 2 by the rope, T_2?
    Q4.Are your asnwers to 2 and 3 equal in magnitude? Why?
    Q5.Now assume that M_1=12 kg
    M_2=5 kg
    F_1=5 N
    F_2=15 N
    M_r= 2 kg
    Repeat your answers to parts 1, 2 and 3 using these values.

    I'm gonna post up my wrong asnwer someone plz check it after

    Attached Files:

  2. jcsd
  3. Oct 7, 2004 #2
    any one???????????????/
  4. Oct 7, 2004 #3


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    Staff Emeritus
    Science Advisor
    Gold Member

    Please post what you've done, and we'll check it for you.
  5. Oct 7, 2004 #4


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    Science Advisor
    Gold Member

    Do you get 0.526 m/s^2, 12.37 N and 11.32 N ?
  6. Oct 10, 2004 #5
    would the acceleration be a= F / m1 + m2
  7. Oct 10, 2004 #6
    F12(the force exerted on by m1 on m2) = (m2/m1+m2) *F
  8. Oct 10, 2004 #7
    can someone please help me figure this out ?
  9. Oct 10, 2004 #8
    i realll need hellp omg this is so hard for me
  10. Oct 11, 2004 #9
    help i still didnt get the same answer
  11. Oct 11, 2004 #10
    i really need help now
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