To solve for m2 and m3 in a 20kg static pulley system, start by drawing free body diagrams for all blocks involved. It's essential to understand the conditions for static equilibrium, where the net force on each block is zero. Consider how the forces acting on m1 relate to the tensions in the rope and the contributions of m2 and m3. Applying Newton's second law (F=ma) to the pulley can provide insights into the system's behavior. Analyzing these elements will lead to a clearer understanding of the unknown masses and tensions.