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Find the acceleration of the system and the maximum force

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  1. Feb 2, 2015 #1
    1. The problem statement, all variables and given/known data
    There are 3 masses ma= 50 kg, mb= 60kg, mc= 80kg. These masses are connected with a rope that affords a tension of 1000 N. On the mass 3 is applied a force F. Knowing that the tension between A and B TAB= 200 N. a)Find the acceleration b) find the maximal value of the force F so that the rope doesn't cut off. a) [4m/s2] b) [1727N]

    2. Relevant equations
    F=m*a

    3. The attempt at a solution
    TAB= ma*a => a=TAB/ ma
     
  2. jcsd
  3. Feb 2, 2015 #2

    Doc Al

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    Staff: Mentor

    That's good. What about part b?
     
  4. Feb 2, 2015 #3
    I don't know... Could you help?
     
  5. Feb 3, 2015 #4

    Doc Al

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    Staff: Mentor

    It's actually quite similar to part a. Draw yourself a diagram. Hint: Which segment of rope would break first, if the force is increased too much?
     
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