In motion of satellites, necessary centripetal force is provided by:
Correct answer: A. Gravitational Force
- A. Gravitational Force
- B. Coulomb's Force
- C. Magnetic Force
- D. Nuclear Force
Explanation
Satellites revolve around planets because the gravitational force of attraction between the satellites and the planets acts as a centripetal force for them. This is why option A is correct. Other forces either don't exist or are too weak to act as a centripetal force.
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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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