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Homework Help: What is the acceleration of the mass along the table?

  1. Jan 4, 2007 #1
    1. The problem statement, all variables and given/known data
    A 10.0 kg mass, m1, on a frictionless table is accelerated by a 5.0 kg mass, m2, hanging over the edge of the table. What is the acceleration of the mass along the table?

    2. Relevant equations
    F=ma
    W=mg


    3. The attempt at a solution
    Can someone atleast point me in the right direction?
     
  2. jcsd
  3. Jan 4, 2007 #2

    PhanthomJay

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    You need to draw a free body diagram of each mass, and note that the tension in the cord between the 2 masses have the same magnitude of pull on each mass, and that each mass must have the same magnitude of acceleration. You'll have to solve 2 equations with 2 unknowns and use newton's second law. Please show some of your work so we can assist further.
     
  4. Jan 4, 2007 #3
    since there is no friction will it move at the same speed as the 5 kg object and since the 5 kg object is hanging its moving at 9.8 m/s squared?
     
  5. Jan 4, 2007 #4
    no... consider the two objects as a whole system. what is the total net force and total mass?
    then from there and:
    [tex]F_{\text{net}}=M_{\text{total}}a[/tex]
    you will find the acceleration.
     
  6. Jan 21, 2011 #5
    Re: Acceleration

    Fg=mg=5kgx9.8m/s^2
    and F=mg=ma so a=f:10kg
     
  7. Jan 21, 2011 #6
    Re: Acceleration

    Even if there was friction, both will move with same speed. And 9.8 m/s2 is just acceleration die to gravity, you forgot to include tension!!!
     
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