1. The problem statement, all variables and given/known data A 6kg block "B" rests as shown(refer attachment) on the upper surface of a 15 Kg wedge "A". Neglecting friction, determine immediately after the system is released from rest, a)The acceleration of A b)The acceleration of B relative to A. 2. Relevant equations F = ma 3. The attempt at a solution For the first part, The force on A due to gravity, parallel to the incline will be Mg sin30° = 75N And the force of the block B on A is mg= 60N, and the component parallel to the incline will be 60 sin30° = 30N, so the total force parallel to the incline is 30+75= 105N Thus, a=Net force/ total mass = 105/(15+6) = 5 m/s^2 . The answer should be 6.63 m/s^2. Where have i gone wrong?