Why is more difficult to lift an inflated football than empty one?

Lifting an inflated football is more difficult than lifting an empty one primarily due to the increased weight of the air inside the inflated ball. Additionally, the inflated ball has a more rigid structure, which can require more effort to grasp and lift. The air pressure also contributes to the overall stability and shape of the ball, making it less flexible and harder to manipulate compared to an empty, deflated one.