In part (a) of Problem, what is the maximum mass block B can have and the system still be...

In part (a) of Problem, what is the maximum mass block B can have and the system still be in equilibrium?

Problem

The blocks shown in Figure are at rest. (a) Find the frictional force exerted on block A given that the mass of block A is 8.82 kg, the mass of block B is 2.33 kg, and the coefficient of static friction between block A and the surface on which it rests is 0.320. (b) If the mass of block A is doubled, does the frictional force exerted on it increase, decrease, or stay the same? Explain.

FIGURE