Well no, it is not confusing, it's the opposite. When we choose different axes according to the position of each block, it is much easier to find the Normal force acting on the system and the acceleration since a(y) becomes zero. But since Block B is in contact with the wedge, I wonder if that's...
Homework Statement
Block B of mass 10 kg is initially at rest as shown on the upper surface of a 20-kg wedge A which is supported by a horizontal surface. A 2-kg block C is connected to block B by a cord which passes over a pulley of negligible mass. Using computational software and denoting...