Physics Elasticity Question 28

Question: To break a wire, a force of $ 10^{6},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

[Roorkee 1979; DPMT 2004]

Options:

A) 34 m

B) 30 m

C) 300 m

D) 3 m

Show Answer

Answer:

Correct Answer: A

Solution:

$ L=\frac{P}{dg}=\frac{6}{3\times 10^{3}\times 10}=\frac{100}{3}=34m $