A (hypothetical) large slingshot is stretched 1.53 m to launch a 130–g projectile with speed sufficient to escape from the Earth (11.2 km/s). (a) What is the force constant of the device, if all the potential energy is converted to kinetic energy? (b) Assume that an average person can exert a force of 220 N. How many people are required to stretch the slingshot?

Radhika Batra , 9 Years ago

Grade 11