Is mass is the wrong conception?
Doubt about mass?
Mass became doubtful about its existancy when the experiment of falling bodies in vaccum had done. In vaccum different masses matters fall in a same time from same height. What is the role of mass in this case to fall of the falling bodies. In generally different masses matters fall in different time from same height. In this case air restrict the propagation or falling of the matters. If you allow a matter in free falling to the earth, what matter will be axt on falling. Here the attraction of the earth will acts on falling of the matter. This attraction of the earth on the matter may define as weight. Weight is equal to mass product of gravitational acceleration. W= mg. But in vaccum there have no role of mass in falling. Hence, it is questionable about the existance of mass.