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Author Question: The vector sum of three co-planar forces (Read 413 times)

jake

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on: Aug 1, 2020

Question 1

The total force needed to drag a box at constant speed across a surface with coefficient of kinetic friction μk is least when the force is applied at an angle θ such that

◦
sinθ = μk.

◦
cosθ = μk.

◦
tanθ = μk.

◦
cotθ = μk.

◦
secθ = μk.


Question 2

The vector sum of three co-planar forces

◦
must be zero.

◦
must be perpendicular to one of the three.

◦
must be parallel to one of the three.

◦
must be perpendicular to the plane.

◦
may have any direction in the plane.
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by jake on Aug 1, 2020

jessicaduplan

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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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jake

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

abro1885

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Reply 3 on: Yesterday
:D TYSM

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