How can a father stop a mother from taking along the child with her and move to another place

If this is a Wisconsin case, you cannot move out of state or more than 150 miles within the state from the other parent without proper advance notice to the other parent, (60 days advance notice) and giving them the notice to have the right to object within 15 days. Did the mother provide you with the statutory notice? If the mother is moving away within the state, but less than the 150 mile distance, file a motion if you object to the move to modify custody and placement.