Question

A wire can sustain the weight of 20 kg before breaking. If the wire is cut into two equal parts, each part can sustain a weight of

(a) 10 kg

(b) 20 kg

(c) 40 kg

(d) 80 kg.

Answer 1

The correct answer is (b) 20 kg

Explanation: 

The breaking stress in each part of the wire will be the same as the original because of the same material. Since the area remains the same, each part can sustain a weight of 20 kg.