The kinetic energy of a revolving satellite (mass m ) at a height equal to thrice the radius of
the earth 
is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
The kinetic energy of a satellite of mass m at a height h is, 
where M and R are the mass and radius of the earth respectively, and G is the gravitational constant.
Now, the kinetic energy of the satellite at a height thrice the radius of earth, i.e., 
(Using eqn. (i))
or 
or 
where 
is the acceleration due to gravity.
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