1. The problem statement, all variables and given/known data Two blocks connected by a cord passing over a small, frictionless pulley rest on frictionless planes: Which way will the system move when the blocks are released from rest? Right or left? What is the acceleration of the blocks? What is the tension in the cord? 2. Relevant equations F=ma w=ma 3. The attempt at a solution First off all, it should move to the left, as there is more weight there. We know that there is a force of gravity acting on each of the blocks straight downwards. And the pulling back of the block 100kg is not much, thus allowing it to slide to the left. For the 50kg block, the tension is greater than the normal force and the gravity force which allows it to move. The acceleration of the system is the total sum of the forces divided by the sum of the masses. The tension of the cord is the difference between the forces at the end of each. If my description is correct, how do I go into the mathematical part.?