2006-12-20 23:32:49 · 13 answers · asked by talent 2 in Science & Mathematics ➔ Physics
It is probably true for your purposes.
Sudhan, Newton's third law does hold true in other frames of reference too.
The only case where it doesn't appear to hold true has been explained with quantum field theory. Take, for example, the laser cavity. What causes spontaneous emission of radiation initially? Well, the action seems to be totally random and, therefore, an action without cause. It was then realised that this cause did exist in the form of virtual photons popping into existance and disappearing again in such a short time that the uncertainty principal isn't violated.
Remember, conservation of energy and momentum can be violated as long as the uncertainty principal isn't!
Anyway, the only case where Newton's third law doesn't hold true is that these virtual photons seem to appear and disappear without cause. This is in the process of being tested against a version of string theory that may offer an explanation.
2006-12-21 04:15:55 · answer #1 · answered by Mawkish 4 · 0⤊ 0⤋
Yeah its true .
For eg1. When a bullet is fired from a gun, the gun applies a force on the bullet and the bullet moves out of the gun . At the same time the bullet applies an equal amount of force in the opp. direction so that the gun recoils.
eg.2 A large adult gently shoves away a child on a skating rink, in addition to the force the adult imparts on the child, the child imparts an equal but oppositely directed force on the adult. Because the mass of the adult is larger, however, the acceleration of the adult will be smaller.
2006-12-21 09:16:08 · answer #2 · answered by Inu 1 · 0⤊ 0⤋
Absolutely correct. Take for example a book lying on a table. It is applying a downward force on the table.Therefore it should move down.But does it? It doesnt. Thus we can conclude that there must be an upward force acting on it. This is the reaction force.Now u may say that if u apply a force on the walls, why dont u move back? Well its because of the friction between your feet and the ground.
2006-12-21 04:02:08 · answer #3 · answered by Anonymous · 0⤊ 0⤋
This is a very good example of the limitation and imperfection of human language. Most of the times we figure out the actual meaning unconsciously with our experience and the expression of tone, hands and face.
This is particularly true when you are happened to speak the same language in another culture like asian in US or vice versa. It takes time to figure out each other.
It is not newton's fault but one should vibrate at the same frequency to pick up the true meaning.
2006-12-22 02:50:26 · answer #4 · answered by Anonymous · 0⤊ 0⤋
It is completely true that action force is equal to reaction force. B'coz consider any example, action force will be equal to the reaction force.
2006-12-20 23:59:00 · answer #5 · answered by Anonymous · 0⤊ 0⤋
newton 3 law is true
2006-12-23 21:21:15 · answer #6 · answered by love 2 · 0⤊ 0⤋
If false, then you are not following Newtonian Physics. You may be following another set of postulates. Which you may be knowing better than us.
2006-12-21 01:40:07 · answer #7 · answered by Kakoo 2 · 0⤊ 0⤋
Yes. Try one practical example yourself. Experience it yourself and then believe it.
2006-12-20 23:55:06 · answer #8 · answered by SABHA A 2 · 0⤊ 0⤋
yes its true in 99.99%
reason :- somebody has rightly said that "nothing is perfect"
so as the reason
2006-12-21 01:06:33 · answer #9 · answered by tushar p 1 · 0⤊ 0⤋
No. Reason, I am working hard but result is not upto my hardwork.
2006-12-20 23:50:21 · answer #10 · answered by Nadraj 1 · 0⤊ 0⤋