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Chapter 3: Q44P (page 126)

The mass of the Sun is , the mass of the Earth is , and the center-to-center distance is . How far from the center of the Sun is the center of the mass of the Sun-Earth system? Note that the Sun鈥檚 radius is .

Short Answer

Expert verified

The distance of the center of the Sun and the center of the mass of the Earth-Sun system is

Step by step solution

01

Identification of the given data

The given data can be listed below as,

  • The mass of the earth is

  • The mass of the Sun is

  • The center-to-center distance of the earth and the Sun is

02

Significance of the law of the center of mass of the Earth-moon system

The law of the center of mass states that if a rigid object is pushed at its center of mass, then the object will always continue to move.

The equation of the position of the center of mass gives the distance of the center of mass of the Earth-Sun system.

03

Determination of the distance of the center of the earth to the center of mass of the Earth-Moon system

From the law of the center of mass, the distance of the earth鈥檚 center to the Earth-Sun system is expressed as:

Here,is the distance of the earth鈥檚 center to the Earth-Sun system, are the mass of the sun and the earth respectively, are the center to center distance of the sun and the earth and center to center distance of the earth that is 0.

Substituting the values in the above equation, we get-

Thus, the distance of the center of the Sun and the center of the mass of the Earth-Sun system is

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