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ERROR IN VIDEO
In the experiment analysis I calculate the Spring constant (K) for an elastic as 10000N/m. That value should have been obviously much too high at the time, but I did not catch the mistake... I converted the stretch of the elastic (x) to meters, but I did not take the step to make sure that Force was actually measured in Newtons (N)... IT IS NOT. Because the mass of the holder was measured in Nickles, the units should have been (Nickles)m/s^2 and not (kg)m/s^2. I should have left the units as F/m generally, or b/c a Nickle is 3.95g (approx 1/250 of a kg) the Spring Constant should have been 40N/m (oops!)
MIT (Work by a Constant Force)
MIT (Force Law Springs)
Matt Anderson (Determining Spring Constant)
He has a series of videos that are really good - similar style to MIT
Animated (Spring Balance and Force Law)
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