Physics
posted by Capreeca .
A uniform bar of iron is supported by a lon, uniform Hooke's Law spring. The spring is cut in half exactly and the two pieces are used to support the same bar. If the whole spring is stretched by 4 cm in the first bar (that is not cut in half) how much would each spring stretch in the second bar?

if they are in parallel? http://scienceworld.wolfram.com/physics/SpringsTwoSpringsinParallel.html
If they are in series:
http://scienceworld.wolfram.com/physics/SpringsTwoSpringsinSeries.html
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