If $\rho $ is the density of the material of a wire and $\sigma  $ is breaking stress, the greatest length of the wire that can hang freely without breaking is
  • A$\frac{{2\sigma }}{{\rho g}}$
  • B$\frac{{\rho}}{{\sigma g}}$
  • C$\frac{{\rho g}}{{2\sigma }}$
  • D$\frac{{\sigma }}{{\rho g}}$
Medium
art

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