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Physics
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Gravitation
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JEE Mains Questions
Gravitation
Physics
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JEE Mains
NEET
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The mass of a spaceship is
1
0
0
0
k
g
. It is to be launched from the earths surface out into free space. The value of
g
and
R
(radius of earth) are
1
0
m
/
s
and
6
4
0
0
k
m
respectively. The required energy for this work will be :
A
6
.
4
×
1
0
1
1
J
B
6
.
4
×
1
0
8
J
C
6
.
4
×
1
0
9
J
D
6
.
4
×
1
0
1
0
J
Medium
JEE Mains
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>
If g is the acceleration due to gravity on the earth's surface, the gain in the potential energy of an object of mass m raised from the surface of the earth to a height equal to the radius R of the earth, is:
A
2
m
g
R
B
2
1
m
g
R
C
4
1
m
g
R
D
m
g
R
Hard
JEE Mains
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>