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Posted By: newton Simple pendulum eliminate III Newton Rule - 04/16/14 10:19 AM
pendulum feel Gravitation force F1
Earth feel F1 + Fr !!!

action and reaction ???





PL > http://youtu.be/hirbwn7uDyk
EN > http://youtu.be/yLflSYuoZ_0

http://marosz-physics.blogspot.com/
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