A rubber cord catapult has cross-sectional area `25 mm^(2)` and initial length of
Channel: Doubtnut
Date: 2021-11-02

A rubber cord catapult has cross-sectional area `25 mm^(2)` and initial length of rubber cord is `10 cm`. It is stretched to  `5 cm`. And then released to protect a missle of mass `5 gm` Taking `Y_("nibber")=5xx10^(7)N//m^(2)` velocity of projected missle is