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A geostationary satellite is revolving around the earth. To make it escape from gravitational field of the earth, its velocity must be increased by
A
21.3%
B
41.4%
C
75.3%
D
100%
Medium
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Solution
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Correct option is B)
Escape velocity,
v
e
=
2
⋅
v
0
=
1
4
1
4
v
0
Fractional increase In orbital velocity
v
Δ
v
=
v
0
v
e
−
v
0
=
0
.
4
1
4
∴
Percentage increase
=
4
1
.
4
%
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