A certain spring is found not to conform to Hooke's law. The force (in newtons) it exerts when stretched a distance x (in meters) is found to have magnitude 40.0x + 46.1x² in the direction opposing the stretch. (a) Compute the work required to stretch the spring from x-0.28 m tox-0.56 m. (b) With one end of the spring fixed, a particle of mass 2.47 kg is attached to the other end of the spring when it is extended by an amount x-0.56 m. If the particle is then released from rest, what is its speed at the instant the stretch in the spring is x-0.28 m? (c) is the force exerted by the spring conservative or nonconservative?
A certain spring is found not to conform to Hooke's law. The force (in newtons) it exerts when stretched a distance x (in meters) is found to have magnitude 40.0x + 46.1x² in the direction opposing the stretch. (a) Compute the work required to stretch the spring from x-0.28 m tox-0.56 m. (b) With one end of the spring fixed, a particle of mass 2.47 kg is attached to the other end of the spring when it is extended by an amount x-0.56 m. If the particle is then released from rest, what is its speed at the instant the stretch in the spring is x-0.28 m? (c) is the force exerted by the spring conservative or nonconservative?
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
Chapter7: Conservation Of Energy
Section: Chapter Questions
Problem 5P: A block of mass 0.250 kg is placed on top of a light, vertical spring of force constant 5 000 N/m...
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Transcribed Image Text:A certain spring is found not to conform to Hooke's law. The force (in newtons) it exerts when stretched a distance x (in meters) is
found to have magnitude 40.0x + 46.1x2 in the direction opposing the stretch. (a) Compute the work required to stretch the spring
from x-0.28 m tox-0.56 m. (b) With one end of the spring fixed, a particle of mass 2.47 kg is attached to the other end of the spring
when it is extended by an amount x-0.56 m. If the particle is then released from rest, what is its speed at the instant the stretch in the
spring is x-0.28 m? (c) is the force exerted by the spring conservative or nonconservative?
(a) Number
Units
(b) Number
(c) conservative
Units
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