An Indian rubber cord L metre long and area of cross-section A `"metre"^(2)` is suspended
Channel: Doubtnut
Date: 2020-08-23

An Indian rubber cord L metre long and area of cross-section A `"metre"^(2)` is suspended vertically. Density of rubber is D `"kg/metre"^(2)`. If the wire extends by `l` metre under its own weight, then extension `l` is