The value of "g":
Correct answer: A. Decreases with altitude
- A. Decreases with altitude
- B. Increases with altitude
- C. Is constant every where
- D. Does not depend upon altitude
Explanation
g= GM/R2 where R is the distance from the center of the earth. g is inversely proportional to the square of R and therefore with increase in R, g decreases.
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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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