Frequently Asked Questions:

SE 207 Unit 2

 

  1. In some diagrams, Masses are shown to move on small wheels. What does this represent?

    2. Answer:

    This means that the friction between the two surfaces is negligible.

     

  2. How many free body diagrams are needed to obtain the equations of motion of a system?

Answer:

You need to draw a free body diagram for each mass or junction point that moves with a velocity that is unknown in advance.