A) 20m
B) 200m
C) 100m
D) 2000m
Correct Answer: B
Solution :
[b] Breaking stress \[\frac{Force}{area}\] The breaking force will be its own weight \[F=mg=V\rho g=area\times \ell \rho g\] Breaking stress \[=6\times {{10}^{6}}=\frac{area\times \ell \times \rho g}{area}\] or \[\ell =\frac{6\times {{10}^{6}}}{3\times {{10}^{3}}\times 10}=200m\]You need to login to perform this action.
You will be redirected in
3 sec