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Question
Physics
A satellite can be in a geostationary orbit around earth in an orbit of radius r. If the angular velocity of earth about its axis doubles, a satellite can now be in a geostationary orbit around earth of radius
Q. A satellite can be in a geostationary orbit around earth in an orbit of radius r. If the angular velocity of earth about its axis doubles, a satellite can now be in a geostationary orbit around earth of radius
2024
214
Gravitation
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A
2
r
15%
B
2
2
r
3%
C
(
4
)
1/3
r
79%
D
(
2
)
1/3
r
3%
Solution:
Angular speed of earth = angular speed of geostationary satellite
T
∝
ω
1
⇒
T
1
T
2
=
ω
2
ω
1
=
2
1
⇒
T
2
=
2
T
1
Also,
T
∝
r
3/2
∴
(
r
1
r
2
)
3/2
=
T
1
T
2
=
2
1
r
1
r
2
=
(
2
1
)
2/3
=
4
1/3
1
r
2
=
4
1/3
r
1