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Chapter 12: Q8CQ (page 555)

Equation (12·5) would apply to any given chunk of an expanding spherical mass. provided that no chunks overtake any others-if, for instance,speed increases, with distance from the origin. Why? (Think of Gauss’­ law from electrostatics).

Short Answer

Expert verified

The chunk’s motion inside the planet does not change and the speed is also described by the equation (12-5).

Step by step solution

01

Significance of Gauss law:

The Gauss law states that the electric flux is mainly equal to the division of the charge enclosed by the permittivity. It is mainly used in electrostatics.

02

Determination of the reason why speed increases with distance:

The field of gravity is mainly dependent on the enclosed surface’s mass and also the mass’ distance. The field is also independent of the speed whether it increases or decreases with the change in the radius.

Thus, the chunk’s motion inside the planet does not change and the speed is also described by the equation (12-5).

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