The work done to raise a mass 
from the surface of the earth to a height 
, which is equal to the radius of the earth, is [NEET 2019]
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
As we know, the potential energy of body of mass 
of the surface of earth is
… (i)
When the mass is raised to a height 
from the surface of the earth, then the potential energy of the body becomes
Here, 
(given)
… (ii)
Thus, the change in potential energy,
Substituting the values from Eqs. (i) and (ii), we get
Thus, the work done in raising the mass to a height 
is equals to 
.
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