Frequently Asked Questions

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Presentation transcript:

Frequently Asked Questions SE 207 Unit 2

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