A catapult consists of two parallel rubber cords each of length `20cm` and cross-sectional
Channel: Doubtnut
Date: 2020-02-16

A catapult consists of two parallel rubber cords each of length `20cm` and cross-sectional area `5cm^(2)`. When stretched by `8cm`, it can throw a stone of mass `4gm` to a vertical height `5m`, the Young\'s modulus of elasticity of rubber is `[g = 10m//sec^(2)]`