5 A boy s catapult is made of rubber cord which is 42 cm

Last updated: 6/9/2023

5 A boy s catapult is made of rubber cord which is 42 cm long with 6 mm diameter of cross section and of negligible mass The boy keeps a stone weighing 0 02 kg on it and stretches the cord by 20 cm by applying a constant force When released the stone flies off with a velocity of 20 ms Neglect the change in the area of cross section of the cord while stretched The Young s modulus of rubber is closest to Main 2019 8 April 1 a 106Nm 2 2 b 10 Nm 2 c 10 Nm d 10 Nm 2