GravitationHard
Question
A particle of mass m is 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 of the surface of the earth. The minimum value of u so that the particle does not return back to earth, is
Options
A.
B.
C.
D.
Solution
According to law of conservation of mechanical energy
= 0 or u2 = 
= 0 or u2 = Create a free account to view solution
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