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JEE Advanced Model Paper 14 with solutions for online practice
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© examsnet.com
Question : 15
Total: 60
A satellite close to the earth is in orbit above the equator with a period of rotation 1.5 hours. If it is above a point P on the equator at some time, it will be above P again after time
1.5 hours
1.6 hours if it is rotating from west to east
24/17 hours if it is rotating from east to west
24/17 hours if it is rotating from west to east
Validate
Solution:
When rotating west to east
ω
rel
=
2
π
1.5
-
2
π
24
= 2π
(
15
24
)
T' =
2
π
1.5
+
24
15
= 1.6 hours
When rotating east to west
ω
rel
=
2
π
1.5
+
2
π
24
= 2π
(
17
24
)
⇒ T' =
2
π
ω
rel
=
24
17
hours
© examsnet.com
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