explain the Newton's third law?

Question

with examples please!

Answer 1

?wal driht s'notweN eht nialpxe

...Get it?

...No?

O.K. then:

Tread water in a pool and push someone who is also treading water in the pool. No matter how hard you push, you'll BOTH move in opposite directions with equal force.

(simplest example I can think of.)

Answer 2

that is the single which follows numbers one and a couple of. Ol' Newt, equipped on the inertia and F = ma guidelines to posit that once a = 0, meaning a body became no longer accelerating, that meant the sum of forces appearing on the body had to be F = SUM(f) = 0. And the only way those form of forces ought to probably upload as a lot as 0 information superhighway rigidity is for each rigidity to have a counter rigidity that canceled one yet another out. In different words, for each + f there might want to be a - f. it really is an get together. assume you're sitting there at a table reading this answer. Oh, wait, you're; so only study what's taking place for your butt about now. no longer a lot, i'm guessing. that is only sitting there in the chair doing no longer something. it isn't only no longer accelerating, that is not any longer transferring in any respect. yet, like each and every butts on earth, the rigidity of gravity w is pulling it downward, in the course of the middle of the Earth. So why are not you burning up in the middle of the Earth? because your sturdy chair is pushing lower back with a counter rigidity f, the reaction rigidity, with equivalent yet opposite intensity. In different words, in math communicate, we've, ta da, F = SUM(f) = 0 = w + f or w = - f. The chair is pushing up (unfavorable) by using reacting antagonistic to the down (effective) rigidity of gravity and that is Newt's third regulation as discovered by using the seat of your pants..

Answer 3

Newton's 3rd Law makes the world go round. For every force there is an equal and opposite force. If you hold a 10 pound weight steady in your hand, it presses down on your hand with a 10 pound force and your hand presses up on the weight (in the opposite direction) with 10 pounds of force. If there is a 20 pound weight on a scale and you lift it with a magnet capable of a 10 pound lift, it will reduce the weight on the scale by 10 pounds (but not to zero). Forces are pushes or pulls and you must carefully draw the 'system boundaries' under examination. For the ten pound weight in hand the force between your feet and the ground is also increased by 10 pounds but that can be ignored in a given study of the hand balancing the weight or may be a separate study.

Answer 4

All forces occur in pairs, and these two forces are equal in magnitude and opposite in direction.

This law of motion is most commonly paraphrased as: "For every action force there is an equal, but opposite, reaction force".

A more direct translation is:

LAW III: To every action there is always opposed an equal reaction: or the mutual actions of two bodies upon each other are always equal, and directed to contrary parts. -- Whatever draws or presses another is as much drawn or pressed by that other. If you press a stone with your finger, the finger is also pressed by the stone. If a horse draws a stone tied to a rope, the horse (if I may so say) will be equally drawn back towards the stone: for the distended rope, by the same endeavour to relax or unbend itself, will draw the horse as much towards the stone, as it does the stone towards the horse, and will obstruct the progress of the one as much as it advances that of the other. If a body impinge upon another, and by its force change the motion of the other, that body also (because of the equality of the mutual pressure) will undergo an equal change, in its own motion, toward the contrary part. The changes made by these actions are equal, not in the velocities but in the motions of the bodies; that is to say, if the bodies are not hindered by any other impediments. For, because the motions are equally changed, the changes of the velocities made toward contrary parts are reciprocally proportional to the bodies. This law takes place also in attractions, as will be proved in the next scholium.

The explanation of mass is expressed here for the first time in the words "reciprocally proportional to the bodies" which have now been traditionally added to Law 2 as "inversely proportional to the mass of the object." This is because Newton in his definition 1 had already stated that when he said "body" he meant "mass".

The third law follows mathematically from the law of conservation of momentum.

As shown in the diagram opposite, the skaters' forces on each other are equal in magnitude, and opposite in direction. Although the forces are equal, the accelerations are not: the less massive skater will have a greater acceleration due to Newton's second law. It is important to note that the action/reaction pair act on different objects and do not cancel each other out.

If a basketball hits the ground, the basketball's force on the Earth is the same as Earth's force on the basketball. However, due to the ball's much smaller mass, Newton's second law predicts that its acceleration will be much greater than that of the Earth. Not only do planets accelerate toward stars, but stars also accelerate toward planets. If a star gravitationally attracts a planet, then the planet will gravitationally attract the star. The planet is less massive than the star and thus displays greater changes in its state of motion. Similarly, if a falling ball is pulled towards the Earth, then the reaction force is that the Earth is pulled toward the ball. We can not detect any change in the Earth's motion because it is much more massive than the ball.

The two forces in Newton's third law are of the same type, e.g., if the road exerts a forward frictional force on an accelerating car's tires, then it is also a frictional force that Newton's third law predicts for the tires pushing backward on the road.

Answer 5

yes WOP, how sad..

A good example of Newton's third law is when you jump up.
You push of from the Earth.. thus exerting a force on the Earth. The Earth then exerts an equal but opposite force on you but because of the Earth's huge inertia it does not move but you do.

If you were to exert a force on a small body, eg pushing of of a friend and you were in space (to make this easier) then you would both move away from each other with an acceleration equal to F=ma. (Force = mass x acceleration), Newtins second law.

Answer 6

Newton's Third Law of Motion states that for every action done by a force, there is an equal and opposite reaction by another force. Forces always occur in pairs; one force is called an action force and the other is called the reaction force. In the demonstration detailed above, the action force is caused by carbon dioxide from the reaction between vinegar and baking soda. The reaction gas causes pressure to build inside the soda bottle, eventually pushing the cork from its mouth. A result of this action is the movement of the soda bottle in the opposite direction. This movement is caused by the reaction force that stems from the original action. There are many other examples of force pairs in everyday life. When you walk, your feet push on the ground with a force. In return, the ground pushes on you with an equal force, propelling you forward. A plate resting on a table exerts a downward force on that table due to gravity. In return, the table exerts an upward normal force on the plate.

Many more good examples in
http://galileo.phys.virginia.edu/outreach/8thGradeSOL/Newton3Frm.htm

Examples :
When a gun is fired, the force of the gas produced by burning gunpowder hurls out the bullet. By Newton's law, the gun itself recoils backwards.
The nozzle of a big firehose has handles which firefighters must grasp firmly, because as the jet of water shoots out of it, the hose itself is forcibly pushed back.
Rotating garden sprinklers work by the same principle. In a similar way, the forward motion of a rocket comes from the reaction of the fast jet of hot gas shooting out from its rear.

http://www.phy6.org/stargaze/Snewton3.htm

Answer 7

Newton's Third Law of Motion:
F(A on B)= -F(B on A)
Any questions?

Answer 8

9 its c entre of gravityif the resultant force on abody or a system of bodies is zero, the body or he system will remain at rest or moving with a uniform velocty. for example if a glass ball is projected horizontally on a large glass surface, it will travell a long distance before stopping. It is because, there is a force of friction, though small, acting on the ball. If this force were not there, the ball would never stop.

Answer 9

evry action has an equal and opposite reaction

take rocket the coming out of gases with force is the action and the rocket going up is the reaction

Answer 10

All forces occur in pairs, and these two forces are equal in magnitude and opposite in direction.