No. But those are the forces acting on m2. (They would only be equal if m2 were not accelerating.)for m2, would the weight W, be equal to 2T?
No. Try to think this through. (Using a piece of string to work it out may help--I'm not kidding.) If m1 moves 1 m to the right, how far down does m2 move?also I think a1 = a2