Density of rubber is $​d$​. $​ A$​ thick rubber cord of length $​L$​ and cross-section area $​A$​ undergoes elongation under its own weight on suspending it. This elongation is proportional to
  • A$​dL$​
  • B$​Ad/L$​
  • C$Ad/{L^2}$
  • D$d{L^2}$
Medium
art

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