If the mass of earth becomes four times, then the value of "g" _:
Correct answer: A. Also becomes four times
- A. Also becomes four times
- B. One fourth of the mass of the earth
- C. Twice the mass of the earth
- D. None of these
Explanation
The acceleration due to gravity (g) is directly proportional to the mass of the Earth and inversely proporional to the square of the distance from the center of the earth. If the mass of the Earth were to become four times its current value, and assuming the radius remains constant, the value of (g) would also become four times smaller.
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About Gravitation
Newton’s law of universal gravitation relates the force between masses to their masses and separation, while gravitational field strength explains weight and orbital motion. The topic covers satellite velocity and period, escape ideas, weightlessness in free fall, and artificial gravity, which differs from ordinary gravitational attraction.
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