A (hypothetical) large slingshot is stretched 2.30 m to launch a 170 g projectile with speed sufficient to escape from Earth (11.2 km/s). Assume the elastic bands of the slingshot obey Hooke’s law. (a) What is the spring constant of the device if all the elastic potential energy is converted to kinetic energy? (b) Assume that an average person can exert a force of 490 N. How many people are required to stretch the elastic bands?
A (hypothetical) large slingshot is stretched 2.30 m to launch a 170 g projectile with speed sufficient to escape from Earth (11.2 km/s). Assume the elastic bands of the slingshot obey Hooke’s law. (a) What is the spring constant of the device if all the elastic potential energy is converted to kinetic energy? (b) Assume that an average person can exert a force of 490 N. How many people are required to stretch the elastic bands?
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter13: Vibrations And Waves
Section: Chapter Questions
Problem 15P: A horizontal block-spring system with the block on a frictionless surface has total mechanical...
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A (hypothetical) large slingshot is stretched 2.30 m to
launch a 170 g projectile with speed sufficient to escape from
Earth (11.2 km/s). Assume the elastic bands of the slingshot obey
Hooke’s law. (a) What is the spring constant of the device if all the
elastic potential energy is converted to kinetic energy? (b)
Assume that an average person can exert a force of 490 N. How
many people are required to stretch the elastic bands?
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