Hey, I have a practice problem that I haven't been able to get and a test coming up. I've looked in the book for how to solve the problem but can't find anything. Would you mind helping, please? Problem: A 2 kg block is at rest on a dry, flat, horizontal table. A horizontal force with increasing magnitude is applied to the block (in the positive x direction). The block does not move until the applied force reaches a magnitude of 1.5N. What is the magnitude of the friction force by the table on the block when the applied force is 0.4 N? Thank you!