Problem 2 [Free Body diagram and Constraints, 30 points): In the setup below. the strings are massless and inelastic. All surfaces are frictionless. pulley is massless and frictionless. The boxes have mass M1 and M2 as shown. Gravity acts towards the ground (downwards on the page). Construct an accurate Free-Body diagram of the triangular wedge of mass M3. (The pulley is a part of it). The inelasticity of the string constrains the accelerations of M1 and M2. Write the relationship between their accelerations. '3