Conservation of Energy
In the desk top simulation that was popular a few years
ago of the 5 small metal balls attached by strings making each ball a
pendulum where the balls touched when at rest, how is the law of
converation of momentum demonstrated? (One ball is allowed to swing into
the other 4 at rest and the ball on the oposite end carrys the swing
onward). Why don't all four balls move at 1/4 the speed of the moving ball?
This has been answered in our archive:
Thanks for using NEWTON BBS
That would have the same momentum (mv) but not the same energy (mv^2)/2.
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Update: June 2012