Three blocks connected together by strings are pulled along a horizontal surface by applying a force `F. If F =36N` What is the tension `T_(2)` ?.
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Explanation

Suppose the system slides with acceleration .a..
`m_(1)=1kg, m_(2)=8kg, m_(3)=27kg`
`F-T_(2)=m_(3)a, T_(2)-T_(1)=m_(2)a, T_(1)=m_(1)a`
Solving the above equations, we get
`a=(F)/(m_(1)+m_(2)+m_(3))`
`=(36)/(1+8+27)=(36)/(36)=1ms^(-2)`
From the above equation, `T_(2)=F-m_(3)a`
`T_(2)=36-27xx1=9N`