While solving some problems to practice for a physics test i came across something that i don't understand to the fullest extent. In 1 exercise I had to determine the lowest value of the applied force for an object to move. When I calculated it, it was the same amount as the maximum force of static friction acting in the opposite direction (they were both 14.7 N). In the enxt exercise I had to determine the highest force value of applied force for the object to REMAIN STILL (sry for caps :D). It came out the same as the amount of maximum force of static friction. I checked my results and they're correct, but I still don't understand this completely. I calculated the maximum amount of the force of static friction with the cofficient of static friction and the normal force. Please explain this! Thank you