A mass m1 rest on top of another mass , m2, which is connected to m3 by a light rope


This java applet show the force diagram and the motion of the system when the frictional forces are present.



  • Play it! and find out under what kind of condition:

    1. m1 and m2 would not be accelerated? (Net force =0.)

    2. m1 and m2 are accelerated together.

    3. m1 and m2 are accelerated differently. (a1 a2 which one is larger?)



    This is a sample gif picture.




    From the above equations, we can find out the accelerations.

    I did that calculation already! It is your turn to do it now! O.K.