UPSC Prelims 2011 · Question 6 of 100

UPSC Prelims 2011 question on Satellite Orbital Motion

An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth

  1. Does not exist at such distance
  2. Is neutralized by the attraction of the moon
  3. Provides the necessary speed for its steady motion
  4. Provides the necessary acceleration for its motion
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Answer: D. Provides the necessary acceleration for its motion

Earth’s gravity provides the centripetal acceleration necessary for the satellite’s orbital motion.

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