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NEET2007PhysicsGravitationActual

Two satellites of earth, S ₁ and S ₂ are moving in the same orbit. The mass of S₁ of four times the mass of S₂ . Which one of the following statements is true?

Options

  1. AThe potential energies of earth and satellite in the two cases are equal.
  2. BS₁ and S₂ are moving with the same speed
  3. CThe kinetic energies of the two satellites are equal
  4. DThe time period of S₁ is four times that of S₂ .

Correct answer

B. S₁ and S₂ are moving with the same speed

Step-by-step solution

K . E .= G M m 2 r Kinetic energies are unequal aligned & T = 2 r^ 3 / 2 G M & Time period are equal & P.E. =- G M m r & Potential energies are unequal & V= G M r & orbital speeds are equal. aligned

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