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Block A is given an acceleration 12 ms^(...

Block A is given an acceleration `12 ms^(-2)` towards left as shown in fig. Assuming block B always remains horizontal, find the acceleration (in `ms^(-2)`) of B.

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The correct Answer is:
2
`l_(1)+l_(2) = C implies l_(1)^('')+l_(2)^('')=0`

`=-a_(p)+(12-a_(P))=0 implies a_(p)=6ms^(-2)`
`l_(3)+l_(4)+l_(5)+l_(6)=C`
`l_(3)^('')+l_(4)^('')+l_(5)^('')+l_(6)^('')=0`
`a_(P)-a_(B)-a_(B)-a_(B=0`
`impliesa_(p)=3a_(B) implies a_(B)=2ms^(-1)`.
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