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Author Question: A spring with spring constant 800 N/m compressed 0.200 m is released and projects a 0.800 kg mass ... (Read 77 times)

misspop

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on: Aug 1, 2020
A spring with spring constant 800 N/m compressed 0.200 m is released and projects a 0.800 kg mass along a frictionless surface. The mass reaches a surface area where μk = 0.400 and comes to a stop. The following student solution contains at least one error. What is the error?

    

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The elastic potential energy is equal only to the kinetic energy on the right, and is never equal to the internal thermal energy.

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The elastic potential energy is equal only to the internal thermal energy on the right, and is never equal to the kinetic energy.

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The elastic potential energy is equal to either the kinetic energy or the internal thermal energy on the right, but not to their sum, depending on the part of the problem being done.

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Elastic potential energy cannot end up as internal energy change caused by friction.

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Change in mechanical energy by friction cannot end up as elastic potential energy.
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Marked as best answer by misspop on Aug 1, 2020

HandsomeMarc

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Reply #1 on: Aug 1, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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misspop

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Reply 2 on: Aug 1, 2020
Thanks for the timely response, appreciate it

bdobbins

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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