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PhysicsNEET 2021Gravitational potential and potential energy

Gravitation

A particle of mass mm is projected with a velocity v=kVev = kV_e (k<1k < 1) from the surface of the earth (VeV_e = escape velocity). The maximum height above the surface reached by the particle is:

  1. A.R(k1−k)2R\left(\dfrac{k}{1-k}\right)^2
  2. B.R(k1+k)2R\left(\dfrac{k}{1+k}\right)^2
  3. C.R2k1+k\dfrac{R^2k}{1+k}
  4. D.Rk21−k2\dfrac{Rk^2}{1-k^2}✓

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