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Byju's Answer
Standard XII
Physics
Problem Solving
The accelerat...
Question
The acceleration of end
B
when it has been displaced by distance
x
, is:
A
x
L
g
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B
2
x
L
g
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C
x
2
g
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D
g
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Solution
The correct option is
A
x
L
g
Let
m
be the mass per unit length
Considering the free body diagram on both sides we get
T
=
m
(
L
−
x
)
g
=
m
(
L
−
x
)
a
and
m
(
L
+
x
)
g
−
T
=
m
(
L
+
x
)
a
Adding the two we get
m
(
L
+
x
)
g
−
m
(
L
−
x
)
g
=
m
(
L
+
x
)
a
+
m
(
L
−
x
)
a
Solving we get
a
=
g
x
L
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