Three blocks of masses m 1 , m 2 and m 3 are connected by massless strings as shown in the figure on a frictionless table. They are pulled with a force of 40 N. If m 1 = 10 k g m 2 = 6 k g and m 3 = 4 k g , then tension T 2 will be
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Answer:
Total mass of system=20kg
Acceleration of system=A
∴A=
m
F
=
20
40
=2
Because string t
2
pulls 1 an 2 blocks
therefore
t
2
=(m
1
+m
2
)a
=(10+6)×2
=32N
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