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Author Question: A 2.0-kg block sliding on a horizontal frictionless surface is attached to one end of a horizontal ... (Read 67 times)

BrownTown3

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on: Aug 1, 2020

Question 1

A 2.0-kg block slides down a plane (inclined at 40° with the horizontal) at a constant speed of 5.0 m/s. At what rate is the gravitational force on the block doing work?

◦
+98 W

◦
+63 W

◦
zero

◦
+75 W

◦
−75 W


Question 2

A 2.0-kg block sliding on a horizontal frictionless surface is attached to one end of a horizontal spring (k = 200 N/m) which has its other end fixed. If the block has a speed of 4.0 m/s as it passes through the equilibrium position, what is its speed when it is 20 cm from the equilibrium position?

◦
2.6 m/s

◦
3.1 m/s

◦
3.5 m/s

◦
1.9 m/s

◦
2.3 m/s
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by BrownTown3 on Aug 1, 2020

ApricotDream

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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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BrownTown3

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Reply 2 on: Aug 1, 2020
YES! Correct, THANKS for helping me on my review

tkempin

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Reply 3 on: Yesterday
Gracias!

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