A string (A) hanging from the ceiling has a 1 kg mass attached to it and hanging below this mass is string (B) with a 2 kg mass attached. Both of the strings are massless.

How do I calculate the tension in Cord B? I have tried several times with different snwers. Please help

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String B applies a force on the 2 kg mass, to balance that mass's 2 g = 19.6 N weight. The 1 kg mass has not effect upon the tension in cord B