Physics Help Forum Fundamental Laws

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 Oct 17th 2018, 06:09 PM #11 Junior Member   Join Date: Oct 2018 Posts: 25 Where does the green arrow in the picture come from? For real? If you push on the wall...Force...and remove the wall...you go into motion. If you remove yourself, the wall dosent go into motion. Either way while pushing on the wall where does the opposite force "from the wall", come from? Sent from my LG-M210 using Tapatalk
 Oct 18th 2018, 01:08 AM #12 Senior Member     Join Date: Jun 2016 Location: England Posts: 1,085 Actually the wall does move! Just a tiny fraction because bricks are so stiff and inflexible, but this tiny fraction is enough to create tension between the molecules of the brick which generates the force pushing back. __________________ ~\o/~
 Oct 18th 2018, 01:15 AM #13 Junior Member   Join Date: Oct 2018 Posts: 25 Really? I believe you. Makes sense. How does a force always result in an opposite force? I suppose it would start back as equal, but loose some at a point... Sent from my LG-M210 using Tapatalk
 Oct 18th 2018, 01:26 AM #14 Senior Member     Join Date: Jun 2016 Location: England Posts: 1,085 The phrase is "every action gets an equal and opposite reaction" If the force is not balanced by an equal and opposite force, the reaction is movement (acceleration). So the wall moves until the tension in the wall produces a force equal to the force pushing against it, then the movement stops. If the force pushing against the wall gets so large that the tension in the wall exceeds the strength of the cement, then the wall falls down. __________________ ~\o/~
 Nov 18th 2018, 04:21 PM #15 Junior Member   Join Date: Oct 2018 Posts: 25 In fundenmental physics, The teeth of a gear pushes, has contact with the teeth of another gear. Yes it all came from in motion. The gear teeth, or picture the one knouch (tooth) of a gear, against another teeth of the other gear. There IS, mass and force, and the energy, The motion and those measurable quantities are all through time... Even energy has mass and momentum in change of intertia That is how it works... That does not nessarily explain that, that's the only way it has to work. ... Or even that it can't work differently. Worse... Or improved. If it was a different universe; the laws could and would of have to of been started off differently... Then it would of evovled, and progressed, to a result, still functioning differently, achieving another gear design or machine. If there was such a universe, observing that knowledge from here, could, let us have undertanding or insight, in technology for us to utilizing to our advantage, in the existing technology we have, or even the math physics laws that go into our universe our environment. Comparable to a Parallel universe... Same size +/- as ours. Exact size also works. Sent from my LG-M210 using Tapatalk
 Nov 19th 2018, 02:53 AM #16 Senior Member     Join Date: Jun 2016 Location: England Posts: 1,085 There are theoretical physicists who look at the possibilities of building self consistent sensible universes with different fundamental properties. It would seem that they have found no absolute reason that the properties observed in our universe have to be exactly what they are. This is one of the arguments behind the multiverse idea, All the possible universes exist, we just happen to be in this one. __________________ ~\o/~