A 3.0-kg block sits on top of a 5.0-kg block which is on a horizontal surface. The 5.0-kg block is pulled to the right with a force F? as shown in the figure(Figure 1) . The coefficient of static friction between all surfaces is 0.65 and the kinetic coefficient is 0.42.
Part A What is the minimum value of F needed to move the two blocks?
Part B If the force is 10% greater than your answer for (a), what is the acceleration of each block?