if newton's third law applies then why are we able to push bodies i want better explanation previous not good

Answer 1

Whenever you push bodies, they push you as well. But why can you move them while they can't move you? It's all because of friction. The friction force exist between any two surfaces that are in contact with each other. Hence,there is firiction force between your feet and the ground, as well as the buttom of the object you are pushing and the ground. In order to make the object move, you must overcome the friction force that is between it and the ground.
You exert a force on the object, and it exerts the same force on you. If the force is greater than the friction force between the object and the ground, and smaller than the friction force between your feet and the ground, the object moves, while you stay still and don't move. It's obviuos that if the force you are exerting is smaller than the friction force between the object and the ground, the between your feet and the ground, neither the object moves nor you do. BUT, if the force you exert is smaller than the the friction force between the object and the ground, but greater than ff between your feet and the ground, the object stands still, and you move! (You may have experienced it while pushing a heavy object if your shoes were so slippy that a little friction force existed between your shoes and the ground).

If you stand on a nearly frictionless surface, you can't push and move the bodies any more. Because, again, as you exert the force on object, the same force is being exerted on you by the object as usaul, but there is not any resistent force any more to prevent you from moving, and you will slid in opposite direction of the object! (You may have experienced it while standing on a surface covered with a layer of ice (ice is a frictionless surface). )
Another way of experiencing this, is that you wear a roller skate and push against something heavy (or against wall); You exert a force on the object and it exerts the same force on, and since the friction force betwen the wheels and the ground is so small, this force causes you to move in the opposite direction of the object.

Answer 2

There are many ways in which you can go and test the third law.
the first thing you have to accept is that Newtons law relates to Forces.

If you exert a force on a body it exerts the same force back on you. You are pushing it in one direction it is "pushing" you in the opposite direction.

This is a force which only moves and object based on that objects mass. A light object would accelerate faster given the same force than a heavy object.

You then have to take into account the forces working against you. The friction force. It is this force you typically have to overcome to make an object move. Pushing a weight along ice is easier than pushing it along normal ground. This is because you have less force acting against you.

It is this friction that allows you to push an object even if it is more massive than you. Your shoes can provide enough friction to overcome the force acting on you but the object you are pushing would have less friction and woud move in the direction you pushed.

If you go ice skating. Stand off the ice and push your friend gently, they will move away from you and you will stay still. Your friction is too high for you to move, but you will feel the force in your arms and hands. Now get on the ice and push them. You will both move in opposite directions. This is because your frictional forces are more equal and you would now struggle to push this object (friend)

Answer 3

we are able to push bodies because the force we exerted is greater than the push of the object... In the second law..,, when your goin to continue on exerting a force on a body, you'll have its movement.... unless the force you exerted is greater than the interraction of the object.... In 3rd law, when the force you applied to the object is equal to the objects interraction the object woudnt move coz the effect of the force you applied and the interraction of the body cancels out bcoz its magnitude is equal or lesser than the force of interraction of the object but opposite direction........like -7 plus +7=0... 0 means no change of movement...

Answer 4

I don't know why the previous explanations were not good - they seemed o.k. to me - maybe you can explain where they are lacking?

In the meantime try this out. Stand close to a bg solid,heavy wall, don't lean in to the wall - stand upright. Now push the wall with your hands. What happens? Why did it happen ? Remember you pushed the wall not yourself.

Best of Luck - Mike

Answer 5

c.. the third law states..... that when you apply a force on a body than an equal and oppisite force is applied on you.. so for example, that you are pushing a car, then there is an opposite force acting on you, though that force is absorbed by your feet, as friction....

Answer 6

friction is not a constant force and has been expained in detail in previous answers.
so you have a body of mass 5kg.

the friction coeficient is 0.3 so the sliding friction is

0.3* 9.81 * 5 =14.715N

so i apply a force of 3N. i get back a force of 3n due to friction.
i apply a force of 5 the same

but when i apply a force of 20N 14.71N "return to me" due to friction and the remaining wil force the body into accelerating.

Answer 7

We are prevented from moving by friction in the floor. If you push while ice skating you will move backwards.