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If gravitational constant is decreasing with time, what will remain unchanged in case of a satellite orbiting around the earth?

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in Engineering Physics I by (558k points)
If gravitational constant is decreasing with time, what will remain unchanged in case of a satellite orbiting around the earth?

(a) Time period

(b) Orbiting radius

(c) Areal velocity

(d) Angular velocity

The question was asked in examination.

Query is from Gravitational and Gravity topic in section Gravitation of Engineering Physics I

1 Answer

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Best answer
The correct option is (c) Areal velocity

The explanation is: The central gravitational force decreases which does not exert any torque. Hence the angular momentum and consequently areal velocity remain unchanged.

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