Why do they apply the art princeples of emphasis

Emphasis is used in art to attract the viewer's attention to a particular area or object. This is typically the focal point or main subject of the artwork. For instance, in a portrait painting, the artist usually wants you to see the person's face first.

Explanation:

the gravitational force on an object increase as the mass of an object also, im not going to report you, but this question should be under the science category, not health