Wednesday, February 15, 2012

How we can derive Newton's 3rd law of motion by the help of Newton's 2nd law of motion ?

Please answer my question how we can derive newton's 3rd law of motion by the help of 2nd law of motion ?How we can derive Newton's 3rd law of motion by the help of Newton's 2nd law of motion ?ummm all you need to know 3 rd eqalus action has a reaction f equals maHow we can derive Newton's 3rd law of motion by the help of Newton's 2nd law of motion ?newtons 2nd law of motion is that every object on this eath attracts every other object with a force which is directly proportoinal to their masses and inversely proportional to the square of the distance between them.this means that every object attracts the other object and the other object also attracts the same object.this causes a net balanced force and the objects dont collapse.this means that the action done by one object is equal and opposite to the reaction done by the other object so as to obtain a net balanced fore.and this is the third law of motion i.e every action has an equal and opposite reaction.How we can derive Newton's 3rd law of motion by the help of Newton's 2nd law of motion ?isn't the 3rd law the Law of interaction and reaction? It's mathematical expression is: Fa = - Fb. If the 2nd law is F=ma. i guess the third law goes like this: ma = - ma. It simply means that the force you exert on object a is also the equal but opposite force that you exert in object b. does that make sense? i hope taht can help you.

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