Back! Well, statham, it IS possible creating this effect without physics, but, if you want this exact behavior, I'd say you should stick to physics, since you'll need a lot of code, not that simple, to mimic it without physics...
Amigo! When I put an object on another, sometimes not repels, stay together and as I can do to not go when they clash with a lot of momentum. It is a traditional puzzle game with pieces