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The recent question by m.buettner regarding self-inductance and its resistance to EMF Faraday's law - does the induced current's magnetic field affect the change in flux?, recalled me the great question that I always wanted to ask. The 3rd law of Newton says To every action there is always an equal and opposite reaction. This immediately means that action is exactly balanced by reaction force and, because of zero net force, no speed increase should be observed. How do you explain why our concerns with m.buettner are unfounded?

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marked as duplicate by Waffle's Crazy Peanut, Qmechanic May 9 '13 at 7:32

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

good answer. Can I accept it? – Val May 8 '13 at 20:12
up vote 3 down vote accepted

For each action of body A on body B, there is a reaction of body B on body A. The two forces do not apply on the same body and thus won't cancel each other when looking at the movement of body B only.

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