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?

Options

A. `AB` will break earlier than `CD`
B. `CD` will break earlier than `AB`
C. Both will break togther
D. Neither `AB` nor `CD` will break

Answer

A

Explanation

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 `2kg` mass). Hence, force acting on thread `AB` is larger than the force acting on thread `CD` .