Which of the following changes to the earth-sun system would reduce the magnitude of the force between them to one-fourth the value found in part a?

reduce the mass of the earth to one-fourth its normal value.
reduce the mass of the sun to one-fourth its normal value.
reduce the mass of the earth to one-half its normal value and the mass of the sun to one-half its normal value.
increase the separation between the earth and the sun to four times its normal value.

part a was:

consider the earth following its nearly circular orbit (dashed curve) about the sun. the earth has mass mearth=5.98

Reduce the mass of the earth to one-fourth its normal value.

Reduce the mass of the sun to one-fourth its normal value.

Reduce the mass of the earth to one-half its normal value and the mass of the sun to one-half its normal value.

Explanation:

Every particle in the universe attracts any other particle with a force that is directly proportional to the product of its masses and inversely proportional to the square of the distance between them. So, in this case we have:

If :

If

If and :

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..

anchor = archer //