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Q80 (IAS/2011) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Astronomy and astrophysics Answer Verified

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

Result
Your answer: —  Â·  Correct: D
Explanation

An artificial satellite orbiting the Earth is in a state of continuous free fall toward the planet. The Earth's gravitational attraction does not disappear at orbital altitudes; rather, it acts as a centripetal force that keeps the satellite in its curved path. According to Newton's Second Law, this net force provides the necessary centripetal acceleration required to constantly change the satellite's direction of motion without changing its tangential speed in a circular orbit. While the satellite possesses a specific orbital speed, it is the gravitational pull that provides the acceleration (change in velocity vector) toward the Earth's center, preventing it from flying off in a straight line. The attraction of the moon is negligible for maintaining Earth's satellite orbits and does not neutralize Earth's gravity.

Sources

  1. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 5: Exploring Forces > Activity 5.8: Let us observe > p. 72
  2. [2] FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 13: Movements of Ocean Water > TIDES > p. 109
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