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Space missions and artificial satellites - class-X

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Multiple Choice

Communication satellites move in orbits of radius 44,400 km around the earth find the acceleration of such a satelite, assuming that the only force acting on, it is that  due to the earth.Mass of the earth $ = 6 \times {10^{24}}Kg.$

  1. $0.2;m{s^{ - 2}}$
  2. $2.1;m{s^{ - 2}}$
  3. $4.2;m{s^{ - 2}}$
  4. $0.3;m{s^{ - 2}}$
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