111. A rubber cord catapult has cross-sectional area
A rubber cord catapult has cross-sectional area 25mm2 and initial length of rubber cord is It is stretched to and then released to project a missile of mass (Taking YRUBBER=5×108N/m2) velocity of projected missile is
(a) 20 m/s (b) 100 m/s
(c) 250 m/s (d) 200 m/s
Answer-c
(36)