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My high school physics students have been looking at Newton's laws using the
Vernier Motion Detector and Force probe on the Macintosh Computer. We're
running Pasco Carts on their aluminum track and hanging a weight using their
super pulley. This should give us really nice graphs, but...
Our acceleration graph goes up, comes back down then levels off. eg, there's
a bit of a bulge, just as the cart is released. We're careful about hands
and other things that might interfere with the motion detector, but I have
no explanation for this. Has anyone seen this? Can anyone help?
Don McQuarrie (not the chem text author)