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NEET Physics · Hard

Gravitation: Gravitation Mixed MCQ

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Gravitation MixedHardQuestion 6283

Question

Minimum energy to launch satellite from surface into orbit at height h (mass m, g, R):
  1. A
    mgh + GMm/2(R+h)
    Correct
  2. B
    mgh
  3. C
    GMm/2(R+h)
  4. D
    mg(R+h)

Correct answer

mgh + GMm/2(R+h)

Explanation

ΔE = (PE at h − PE at surface) + KE in orbit = mgh + GMm/2(R+h)... standard result: mgh + GMm/2(R+h) (approx for h<

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