A satellite of mass m is revolving around the Earth at radius R with time period T. Which…

Physics · NEET · NTA ExamsGravitation

A satellite of mass m is revolving around the Earth at radius R with time period T. Which of The following statement is NOT TRUE?
  1. The kinetic energy is \(\frac{1}{4} \mathrm{mgR}\) at a height equal to radius of the Earth R
  2. If another satellite of mass 4m is also revolving in the parking orbit, ratio of their time-period is 1 : 4
  3. If the earth suddenly shrinks to half its size without any change in mass, its time-period will remain the same
  4. If the radius of the orbit is increased to 4R, its time-period will increase to 8T

Answer

(B) If another satellite of mass 4m is also revolving in the parking orbit, ratio of their time-period is 1 : 4

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