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Q.

Consider the situation shown in figure. All the surfaces are smooth. The tension in the string connected to 2 m is

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a

mg3

b

4mg3

c

2mg3

d

mg

answer is C.

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Detailed Solution

aA = aB+022aA = aBmaB = m(2aA)------(i)2T = 2m.aA---------(ii)From 2(i) + (ii), we get2mg = 6maAT' = 2maA = 2mg3
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