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Byju's Answer
Standard XI
Physics
Tension in a String
The accelerat...
Question
The acceleration of blocks
m
1
,
m
2
,
m
3
blocks as shown in figure given below will be:
A
F
m
2
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B
F
m
1
+
m
2
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C
F
m
1
+
m
2
+
m
3
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D
F
m
1
+
2
m
2
+
m
3
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Solution
The correct option is
C
F
m
1
+
m
2
+
m
3
Considering the blocks
m
1
,
m
2
,
m
3
as a system all tension forces will become internal force, only external force acting will be
F
.
Applying newton's
2
n
d
law in the direction of acceleration(
a
);
F
E
x
t
e
r
n
a
l
=
m
s
y
s
t
e
m
×
a
s
y
s
t
e
m
F
=
(
m
1
+
m
2
+
m
3
)
a
∴
a
=
F
m
1
+
m
2
+
m
3
Hence option C is the correct answer
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