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A mass of 2kg is suspended with thread A...

A mass of `2kg` is suspended with thread `AB` (figure) Thread `CD` of the same type is attached to the other end of `2kg` mass. Lower thread is pulled gradually, harder and harder in the downward gradually, harder and harder in the downward direction so as to apply force on `AB`. which of the threads will break and why?

Text Solution

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The thread AB will break earlier than the thread CD . This is because force acting on thread CD = applied force and force acting on thread AB = (applied force + weight of 2 kg mass).
Hence , force acting on thread AB is larger than the force acting on thread CD.
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