Hello, I deeply need help on this problem. ANY help would be appreciated. Suppose a hanging 1.0 kb lab mass is attached to a 4.0 kg block on the table. A) If the coefficent of kinetic friction, uk is 0.20, what is the accereration of the block? B) What would be the minimun value of the coefficient of static friction, in order for the block to remain motionless? I have my force diagrams made, equations also. What I am getting confused on is do I add the remaning unbalanced forces, Ff and Fg or is the Ff negative? Any help please!!! Thank You!