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Author Question: As shown in the figure, a 1.45-kg block is held in place against the spring by a 21-N horizontal ... (Read 52 times)

jerry coleman

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on: Oct 11, 2019
As shown in the figure, a 1.45-kg block is held in place against the spring by a 21-N horizontal external force. The external force is removed, and the block is projected with a velocity as it separates from the spring. The block descends a ramp and has a velocity at the bottom. The track is frictionless between points A and B. The block enters a rough section at B, extending to E. The coefficient of kinetic friction between the block and the rough surface is 0.29. The velocity of the block is at C. The block moves on to D, where it stops. How much work is done by friction between points B and C?

◦ -14 J
◦ -3.6 J
◦ -1.8 J
◦ -7.0 J
◦ -6.4 J
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Marked as best answer by jerry coleman on Oct 11, 2019

BUTTHOL369

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Reply #1 on: Oct 11, 2019
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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jerry coleman

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Reply 2 on: Oct 11, 2019
YES! Correct, THANKS for helping me on my review

frankwu0507

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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