Question

A mass of $1kg$ is suspended by a string $A$. Another string $C$ is connected to its lower end (see figure). If the string $C$ is stretched slowly, then

• A. None of the strings will break
• B. The portion $BC$ of the string will break
  
• C. None of the above
  
• D. The portion $AB$ of the string will break
  

Answer 1

The correct option is D The portion $AB$ of the string will break


When the string $C$ is stretched slowly, the tension in $A$ is greater than that of $C$, because of the weight $mg$ and the former reaches breaking point earlier.

Final answer: (a)