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Block A of mass m and block B of mass `2m` are placed on a fixed traingular wedge by means of a massless inextensible string and a frictionless pulley as shown in figure The wedge is inclined at `45^(@)`to the horizontal on both sides .The coefficient of friction between blocks A and the wedge is `2//3` and that between block B and is released from rest find the following

The tension in the string is

A

zero

B

`(2m^(2))/(3)g`

C

`(4m^(2))/(3)g`

D

`(m^(2))/(sqrt(2))g`

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The correct Answer is:
A
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