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Byju's Answer
Standard XII
Physics
Gravitational Potential
Field at a di...
Question
Field at a distance
x
due to a circular ring,
E
G
=
−
G
M
√
(
R
2
+
x
2
)
3
.
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Solution
Let the linear mass velocity of the ring be
λ
Gravitational potential
=
G
M
√
r
2
+
x
2
As potential is scalar quantity it will be added for each unit mass.
Now,
E
=
−
d
V
d
x
=
−
d
(
G
M
√
r
2
+
x
2
)
d
x
E
=
−
G
M
√
(
R
2
+
x
2
)
3
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