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?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter6: Energy Of A System
Section: Chapter Questions
Problem 17P: When a 4.00-kg object is hung vertically on a certain light spring that obeys Hookes law, the spring...
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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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