Doubt - Force cannlt exceed limiting friction for a block to remain at rest on ground. However for to blocks to move together, it becomes more than limiting friction, yet only static friction is acting on the blocks? Which moves the lower block. How can it be more in this case? Relative motion is zero in both cases. I am missing some crucial point here but I am unable to find the flaw. A direct answer or hint whatever is given would be much appreciated. Image of the problem is attached. It's not a homework problem, it's a solved example alongside another situation I created to show what doubt I am facing.