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t und ellergy to find the skater's speed after gliding 100 m in this wind. b. What is the minimum value of u, that allows her to continue moving straight north? 50. I You're fishing from a tall pier and have just caught a 1.5 kg fish. As it breaks the surface, essentially at rest, the tension in the vertical fishing line is 16 N. Use work and energy to find the fish's upward speed after you've lifted it 2.0 m. 51. I Hooke's law describes an ideal spring. Many real springs are CALC better described by the restoring force (FSp)s=-kAs -q(As)', %3D where g is a constant. Consider a spring with k = 250 N/m and q3800 N/m³. a. How much work must you do to compress this spring 15 cm? Note that, by Newton's third law, the work you do on the spring is the negative of the work done by the spring. b. By what percent has the cubic term increased the work over what would be needed to compress an ideal spring? Hint: Let the spring lie along the s-axis with the equilibrium position of the end of the spring at s =0. Then As = s. 52. The force acting on a particle is F= Foe %3D x/- ce e¯L. How much work

t und ellergy to find the skater's speed after gliding 100 m in this wind. b. What is the minimum value of u, that allows her to continue moving straight north? 50. I You're fishing from a tall pier and have just caught a 1.5 kg fish. As it breaks the surface, essentially at rest, the tension in the vertical fishing line is 16 N. Use work and energy to find the fish's upward speed after you've lifted it 2.0 m. 51. I Hooke's law describes an ideal spring. Many real springs are CALC better described by the restoring force (FSp)s=-kAs -q(As)', %3D where g is a constant. Consider a spring with k = 250 N/m and q3800 N/m³. a. How much work must you do to compress this spring 15 cm? Note that, by Newton's third law, the work you do on the spring is the negative of the work done by the spring. b. By what percent has the cubic term increased the work over what would be needed to compress an ideal spring? Hint: Let the spring lie along the s-axis with the equilibrium position of the end of the spring at s =0. Then As = s. 52. The force acting on a particle is F= Foe %3D x/- ce e¯L. How much work

University Physics Volume 1
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter7: Work And Kinetic Energy
Section: Chapter Questions
Problem 30P: Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a 60.00...
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t und ellergy to find the skater's speed after gliding 100 m in this wind. b. What is the minimum value of u, that allows her to continue moving straight north? 50. I You're fishing from a tall pier and have just caught a 1.5 kg fish. As it breaks the surface, essentially at rest, the tension in the vertical fishing line is 16 N. Use work and energy to find the fish's upward speed after you've lifted it 2.0 m. 51. I Hooke's law describes an ideal spring. Many real springs are CALC better described by the restoring force (FSp)s=-kAs -q(As)', %3D where g is a constant. Consider a spring with k = 250 N/m and q3800 N/m³. a. How much work must you do to compress this spring 15 cm? Note that, by Newton's third law, the work you do on the spring is the negative of the work done by the spring. b. By what percent has the cubic term increased the work over what would be needed to compress an ideal spring? Hint: Let the spring lie along the s-axis with the equilibrium position of the end of the spring at s =0. Then As = s. 52. The force acting on a particle is F= Foe %3D x/- ce e¯L. How much work
Transcribed Image Text:t und ellergy to find the skater's speed after gliding 100 m in this wind. b. What is the minimum value of u, that allows her to continue moving straight north? 50. I You're fishing from a tall pier and have just caught a 1.5 kg fish. As it breaks the surface, essentially at rest, the tension in the vertical fishing line is 16 N. Use work and energy to find the fish's upward speed after you've lifted it 2.0 m. 51. I Hooke's law describes an ideal spring. Many real springs are CALC better described by the restoring force (FSp)s=-kAs -q(As)', %3D where g is a constant. Consider a spring with k = 250 N/m and q3800 N/m³. a. How much work must you do to compress this spring 15 cm? Note that, by Newton's third law, the work you do on the spring is the negative of the work done by the spring. b. By what percent has the cubic term increased the work over what would be needed to compress an ideal spring? Hint: Let the spring lie along the s-axis with the equilibrium position of the end of the spring at s =0. Then As = s. 52. The force acting on a particle is F= Foe %3D x/- ce e¯L. How much work
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