Tutorial In Introductory Physics: charge

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SUMMARY

The discussion centers on the comparative analysis of electric forces in introductory physics, specifically focusing on Cases A, B, C, and D from a homework assignment. The participant expresses uncertainty regarding the justification for their instinct that Cases C and D are equal, while also considering that Case D exerts a greater force on the +q charge. The conclusion drawn is that Case D, which combines the forces of Case A and Case B, indeed results in a greater force than Case C, which is double the force of Case A.

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Salamandersam
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link to problem: http://www.csu.edu/chemistryandphysics/msabella/ccli/UpdatedLabs/physics2-calc/HW%20packet.pdf

I don't under part two of question two on the assignment with the Case C and D. my gut instinct tells me that they are equal, but I do not have justifacation and when I look back to part one of 2 I think that Case D would have a greater force on the +q charge.

I know that Case A< Case B, and case C looks like 2(case A) and case D looks like (case A + Case B) so 2(case A) should be less than (case A +case B) meaning that Case D should be larger than C?
 
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Hi Salamandersam! Welcome to PF! :wink:
Salamandersam said:
… I do not have justifacation …

I know that Case A< Case B …

Yes, so let's start with that …

tell us your justification for Case A< Case B :smile:
 

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