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Tension of a String between two objects (horizontal, no gravity or accelleration?)

  1. Aug 12, 2009 #1
    1. The problem statement, all variables and given/known data
    Two blocks of masses 2kg (a) and 3kg (b) rest on a smooth horizontal surface and are connected by a taut string of negligible mass. A force of 10 N is applied to the 3kg mass as shown in figure (below). Calculate the tension in the string between them.

    The answer is 4N

    http://www.noosahill09.com/images/upload1.jpg [Broken]

    2. Relevant equations
    Friction has not been discussed yet, it is in the next chapter.


    3. The attempt at a solution
    I can figure out how to calculate the tension on a string of a pulley or the tension of a string with a hanging object attached... but because there is no gravity to work out I dont know how to calculate this?

    Any help is appreciated!!!
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Aug 12, 2009 #2

    ideasrule

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    Homework Helper

    Re: Tension of a String between two objects (horizontal, no gravity or accelleration?

    Write out Newton's second law for both masses.
     
  4. Aug 12, 2009 #3

    tms

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    Re: Tension of a String between two objects (horizontal, no gravity or accelleration?

    You should also reexamine the part of your subject line that says that there is no acceleration.
     
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