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In the following arrangement, the system is initially at rest. The 5-kg block is now released. Assuming the pulleys and string to be massless and smooth, the acceleration of block C will be

a
Zero
b
2.5ms−2
c
10/7ms−2
d
5/7ms−2

detailed solution

Correct option is D

For A:5g−T=5(2C) For C:2T−8g=8C ⇒ C=814=57ms−2

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