When a spring is stretched to x centimeters from its equilibrium point at x = 0, a potential energy of U = ¿kx² is stored in the spring, where U has units of Joules and k is a positive constant. dU (a) What should the units of be? dx (b) When the string is stretched so that x > 0, does further stretching increase or dU decrease the potential energy? Use something about in your answer! d.x (c) Contrast the cases between 2 centimeters stretched and 3 centimeters stretched: where will stretching the spring by a further little bit cause the greater increase in potential energy stored in the spring?

When a spring is stretched to x centimeters from its equilibrium point at x = 0, a potential energy of U = ¿kx² is stored in the spring, where U has units of Joules and k is a positive constant. dU (a) What should the units of be? dx (b) When the string is stretched so that x > 0, does further stretching increase or dU decrease the potential energy? Use something about in your answer! d.x (c) Contrast the cases between 2 centimeters stretched and 3 centimeters stretched: where will stretching the spring by a further little bit cause the greater increase in potential energy stored in the spring?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter8: Potential Energy And Conservation Of Energy

Section: Chapter Questions

Problem 79AP: Consider a block of mass 0.200 kg attached to a spring of spring constant 100 N/m. The block is...

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