A particle of mass ‘m’ is kept at rest at a height 
from the surface of earth, where 
’ is radius of earth and 
is mass of earth. The minimum speed with which it should be projected, so that it does not return back, is 
is acceleration due to gravity on the surface of earth) (NEET 2013)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
: The minimum speed with which the particle should be projected from the surface of the earth
so that it does not return back is known as escape speed and it is given by
Here, 
( 
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