I'm studying Newton's three laws.
Suppose we have two objects: A and B. A is on a smooth surface. B is stacked on top of A.
Between A and B there is friction. The static friction coefficient is some non-0 constant J.
A force F is acting horizontally on A, pulling it to the right.
In response, my understanding is that the static friction with B is going to push A to the opposite direction.
Suppose F is not strong enough to exceed the maximal value of the static friction. This means that |F| = |friction from B applied on A|.
Since both of these forces operate on A at the same size in opposite directions, it seems like A should stay stationary exactly where it is.
However, in actuality I think A will move to the right immediately, and B will stay stacked on top of it.
What am I missing? Why would A (and B on top of it) will move to the right, instead of staying in place?