Question

To break a wire, a force of ${10}^6\frac{N}{m^2}$ is required. If the density of the material is $3\times {10}^{3}kg/m^3,$ then the length of the wire which will break by its own weight will be

• A. 34 m
• B. 30 m
• C. 300 m
• D. 3 m

Answer 1

The correct option is A 34 m

Length of the wire which will break by its own weight $L=\frac{P}{dg}=\frac{{10}^6}{3\times {10}^3\times 10}=\frac{100}{3}$
= 33.3 m $\simeq$ 34 m.