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JAMB Physics 2003 Question 13

Question 13

Gravitational Field

A satellite is in a parking orbit if its period is

  1. A.less than the period of the earth
  2. B.more than the period of the earth
  3. C.equal to the period of the earth
  4. D.the square of the period of the earth
Show the answer and explanation

Answer: C (equal to the period of the earth)

Explanation

A parking (geostationary) satellite goes round once in the time the earth takes to rotate once (24 h), so it stays over the same place.