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Class 11 NEET Physics Gravitation Questions
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© examsnet.com
Question : 4
Total: 83
The minimum energy required to launch a satellite of mass
m
from the surface of earth of mass
M
and radius
R
in a circular orbit at an altitude of
2
R
from the surface of the earth is:
[NEET 2024]
5
G
m
M
6
R
2
G
m
M
3
R
G
m
M
2
R
G
m
M
3
R
Validate
Solution:
👈: Video Solution
Apply energy conservation,
U
i
+
K
i
=
U
f
+
K
t
⇒
−
G
M
m
R
+
K
i
=
−
G
M
m
3
R
+
1
2
m
v
2
⇒
−
G
M
m
R
+
K
i
=
−
G
M
m
3
R
+
1
2
×
m
×
G
M
3
R
⇒
K
i
=
−
1
6
G
M
m
R
+
G
M
m
R
K
i
=
5
6
G
M
m
R
© examsnet.com
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