Question

Two bodies A (20 kg) and B (30 kg) tied with a light string are placed on a frictionless table. A force F acting at B pulls this system with an acceleration of 3ms 2. The tension in the string is : (1) 60 N (2) 120 N (3) 90 N (4) 140 N
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Answer 1

Explanation:

T 1 =F

T 1=m1 a

T 1 −T=m 2 a

30×3−T=20×3

T=60N

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Answer 2

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Explanation:

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