2023-11-20 08:07:56 UTC
In my animation
if we click on the "Start" button, we see the "net" force 10 which accelerates the mass of the elementary particle A towards the right (according to the second law F=ma) and no force directed towards the left.
So far I have nothing to ask because everything is clear.
Then we select the checkbox to add particle B.
In this case, there is no longer the single particle (A) but there is the body AB formed by the set of the two particles A and B, so that the mass doubles and the acceleration is halved.
The force F=10 acts only on particle A which transmits the push to particle B.
In this way, an action and reaction relationship is established between A and B: particle A exerts a blue force towards the right on particle B and particle B reacts with a red force towards the left on particle A.
Question 1: Is it correct to say that these two blue and red forces are worth 5 and â5 respectively?
Question 2: Is it correct to say that a "net" force (5) to the right acts on particle A (blue force 10 minus red force 5) and a net blue force (5) acts to the right on particle B?