Please help.

Dear Student,

Please find below the solution to the asked query:

The tension in the string between A & B is T1 and between B & C is T2. Then the strings are inextensible. So, three blocks should have same acceleration. Let the acceleration of the blocks is a.

For A,ma=T1-mgT1=ma+mgFor B,ma=mg+T2-T1For C,ma=mg-T2T2=mg-maSo,ma=mg+mg-ma-ma+mgma=mg+mg-ma-ma-mgma=mg-2ma3ma=mga=g3So,T1=mg+a=2g+g3=8g3 and T2=mg-a=2g-g3=4g3

 

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