1 Friction in Newton's Laws Masses A, B. and C are arranged as shown in Figure 1. Mass B sits on a frictionless surface but there is a coefficient of friction , between mass A and mass B. The string and pulley connecting masses B and C are massless and frictionless. How many free body diagrams should you draw? What are they? What is the largest mass C can be such that A and B stay in contact and slide together? MA mc Figure 1