The main reason a person weighs less at the equator than at the poles involves the
A)spin of the Earth.
B)influence of the Sun, Moon, and all the planets.
C)law of action and reaction.

Question

Quizplus · Accepted Answer

The spin of the Earth causes a centrifugal force at the equator that counteracts the gravitational force, making a person weigh less. At the poles, there is no centrifugal force, so the gravitational force is stronger, resulting in a higher weight for a person. The influence of the Sun, Moon, and all the planets may have a subtle effect on the Earth's overall gravity, but it is not significant enough to cause a noticeable difference in weight between the equator and poles. The law of action and reaction (Newton's Third Law) is not directly relevant to this phenomenon.

The Main Reason a Person Weighs Less at the Equator