We all know that instruments don't move themselves, however, some may be harder to move than other. Newton's second law states that the larger the mass of an object, the more force it takes to accelerate. This is why bigger instruments are a lot more of a hassle to move than smaller ones, because they have more mass.
As you can see through the pictures, the figure attempting to move the larger drum is having a much harder time than the figure trying to move the smaller drum. This is because the more mass to an object, the more force needed to make it accelerate.