Question:

A particle of mass m is thrown upwards from the surface of the earth, with a velocity u. The mass and the radius of the earth are, respectively, M and R. G is gravitational constant and g is acceleration due to gravity on the surface of the earth. The minimum value of u so that the particle does not return back to earth, is

Options :

  • (a) √2gR^2
  • (b) √2GM/R^2
  • (c) √2GM/R
  • (d) √2gM/R^2

Answer :

(c) √2GM/R

Answer Steps :

step 1

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