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Homework Help: Trolley question

  1. Feb 3, 2017 #1
    • HW Template missing as it was moved from another forum
    Screen Shot 2017-02-03 at 3.50.10 PM.png The tension of the M is 3.0N but I don't know how to get the mass of M. The answer is 0.34kg which I can't get. Help?
     
  2. jcsd
  3. Feb 3, 2017 #2

    Doc Al

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    Staff: Mentor

    What forces act on M? Apply Newton's 2nd law.
     
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