Question
Question: A mass of 1 *kg* is suspended by a string *A*. Another string *C* is connected to its lower end (see...
A mass of 1 kg 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
The portion AB of the string will break
B
The portion BC of the string will break
C
None of the strings will break
D
None of the above
Answer
The portion AB of the string will break
Explanation
Solution
When the spring 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.