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Q.

Figure shows two blocks A and B connected to an ideal pulley string system. In this system when bodies are released then: (neglect friction and take g = 10 m/s2)

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a

Acceleration of block A is 1 m/s2

b

Acceleration of block A is 2 m/s2

c

Tension in string connected to block B is 40 N

d

Tension in string connected to block B is 160 N

answer is B.

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Detailed Solution

Applying NLM on 40 kg block               400 - 4 T = 40aFor 10 kg block T = 10.4aSolving a = 2 m/s2            T = 80 N
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