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Physics Newton's Laws of Motion Mix MCQ (Single Correct)

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/s 2 ) –

A
Acceleration of block A is 1 m/s 2
B
Acceleration of block A is 2m/s 2
C
Tension in string connected to block B is 40 N
D
Tension in string connected to block B is 80N

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The correct answer is:
CHECK THE SOLUTION.

(b, d)

Applying NLM on

40 kg block

400 – 4T = 40 a

For 10 kg block

T = 10 × a

Solving a = 2m/s 2 T = 80 N

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