The two \( 10 \mathrm{~kg} \) blocks, A and B are connected by member \( A B \) as shown. The coefficient of static friction \( \mu_{s}=0.3 \) for all contacting surfaces. a. Show that the system is in equilibrium when \( P=0 \mathrm{~N} \), b. Determine the maximum value of \( P \) to maintain equilibrium.

The two 10kg blocks, A and B are connected by member AB as shown. The coefficient of static friction s=0.3 for all contacting surfaces. a. Show that the system is in equilibrium when P=0N, b. Determine the maximum value of P to maintain equilibrium