SUMMARY
The goal of Chapter 6 has been to learn how to solve problems about motion in a straight line.
General Strategy
All examples in this chapter follow a fourpart strategy. You’ll become a better problem solver if you adhere to it as you do the homework
problems. The
Dynamics Worksheets
in the
Student Workbook
will help you structure your work in this way.
Equilibrium Problems
Object at rest or moving with constant velocity.
MODEL
Make simplifying assumptions.
VISUALIZE
•Translate words into symbols.
•
Identify forces.
•
Draw a freebody diagram.
SOLVE
Use Newton’s first law:
“Read” the vectors from the freebody diagram.
ASSESS
Is the result reasonable?
F
r
net
5
a
i
F
r
i
5
0
r
Dynamics Problems
Object accelerating.
MODEL
Make simplifying assumptions.
VISUALIZE
•Translate words into symbols.
•
Draw a sketch to define the situation.
•
Draw a motion diagram.
•
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 Spring '08
 Dick
 Physics, Force, freebody diagram, Fnet, 5 mg, 4mg

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