Practice your skill at constructing free-body diagrams
for a given physical situation. Twelve different
descriptions of a physical situation are presented; your
goal is to determine the type and relative magnitude of
the forces acting upon the described object.
Use the popup menus on the right side of the
screen to identify the types of forces acting in the
rightward, leftward, upward and downward
Use the popup menus to identify the relative
magnitude of each individual force. The important
factor is not whether you indicate Large, Medium or
Small, but rather that you indicate whether the
rightward force is larger, smaller or of the same
magnitude as the rightward force.
When you have identified the type and relative
magnitude of all applicable forces, click on the
"Check Answer" button at the bottom of the
Repeat steps 1-3 until you have successfully
answered all twelve problems. If you are a GBS
student, use the "Submit button" to submit your
answers to the GBS server.
If necessary, use the "Try New Problem" button to
skip the given problem; you will have to do the
If necessary, use the "Web Help" button to obtain
help from The Physics Classroom. If you do use the Web
Help button, do
not close this
window containing this page with the Shockwave file.
If you do, you will have to reopen the Shockwave file
and start over.