Question

The maximum load a wire can withstand without breaking, when its length is reduced to half of its original length, will
A. be double
B. be half
C. be four times
D. remain same.

Answer 1

Correct Answer - D
Breaking force = Breaking stress `xx` Area of cross-section . When the wires is cut to half, there is no change in the area of the area of cross-section of their wire. Therefore , there is not change in the area of the maximum load (i.e., braking force ) the wire can support.