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Homework Help: Forces on a Pulley?

  1. Oct 11, 2015 #1
    1. The problem statement, all variables and given/known data

    mass 1 is sitting on a frictionless table and is connected by a string to mass 2 which is hanging over the edge via pulley...

    2. Relevant equations


    3. The attempt at a solution

    What is the normal force of mass 1 exerted on and exerted by? I think the normal force is exerted by the table and exerted on the mass.
    What is the tension in the string exerted on and exerted by? I think the tension in the string is exerted by mass 2 (hanging over the edge) and it's exerted on the string.
    What is the force of mg exerted on and exerted by? I think the force of mg would be exerted on the mass 1 and exerted by gravity.

    I understand forces pretty well, but I'm a little confused as to what exactly is exerting them and being exerted upon. Could someone tell me if i'm correct or wrong?
  2. jcsd
  3. Oct 11, 2015 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Welcome to physicsforums!

    What you've written looks reasonable to me.
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