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I'd like to second some of this. In introductory physics, we're usuallyasking the students to replicate some well-known result such as the
for which there is no accepted value - finding the spring constant of
One way to do this is to find some variation on the standard experiment
of "mechanism." If you ask 'em how it works, they say, "push that
Part of the difficulty is that many students have very little concept
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Vickie Frohne