Hi could someone help me solve this problem? there are 2 masses on a table connected by a spring with unknown stiffness. Mass of block I is m1 and mass of block II is m2. Also unknown friction coefficient u (same for both masses) I need to find the minimum constant force applied to block II so that block I moves (at least a little bit) thanks btw I have no idea how to derive the final answer. I know that the force acting on block II needs to overcome static friction. And once block II moves it will do work on the spring and this work stored in the spring will move block I.