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In the arrangement shown in the figure t...

In the arrangement shown in the figure the coefficient of friction between the blocks C and D is `mu_(1) = 0.7` and that between block D and the horizontal table is `mu_(2) = 0.2`. The system is released from rest. [ Take `g = 10 ms^(–2)`] Pulleys and threads are massless.

(a) Find the acceleration of the block C.
(b) Block B is replaced with a new block. What shall be the minimum mass of this new block so that block C and D accelerate in opposite direction?

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