Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Homework Help
Introductory Physics Homework Help
Calculating total Coulomb force vector ?
Reply to thread
Message
[QUOTE="starstruck_, post: 6054623, member: 609947"] [h2]Homework Statement [/h2] Consider a configuration consisting one +q charge ( upper right) and three −q charges, arranged in a square. Side lengths = d. Calculate the total F force vector acting on charge +q.[h2]Homework Equations[/h2] Vector form of culomb’s force F=( kq1q2/r^2) rhat (rhat for unit vector - I’m on my phone so I can’t really tyupe it out properly, sorry) [h2]The Attempt at a Solution[/h2] Split into 3 Force vector (between +q and each charge ). F1 is horizontal, F2 is the diagonal force vector, F3 is the vertical force vector. F1 = (-ke^2/r^2)rhat r= d rhat= (ihat) Or is it rhat= d( ihat )? Anyways, F1= ((-ke^2)/d^2))(ihat) F2 = (-ke^2/r^2)(rhat) r = sqrt(d^2+d^2) r= sqrt(2)d rhat = r vector/|r vector| Assuming tail at origin r vector = <d,d> rhat= d(ihat)+d(jhat)/(sqrt(2)d) F2= (-ke^2/(2d^2))(d(ihat)/sqrt(2)d)+ (-ke^2/(2d^2))(d(jhat)/sqrt(2)d) F2 =(-ke^2/(2sqrt(2)d^3))(d(ihat))+(-ke^2/(2sqrt(2)d^3))(d(jhat)) F3 = (-ke^2/r^2)(rhat) r= d rhat= jhat or is it rhat = d(jhat)? F3= (-ke^2/d^2)(jhat) And then I would just add all of the components together. I’m just wondering if I did this rhat business correctly ? It said to use the vector form of the Coulomb force, so I tried- I’m not used to working with forces in this manner. ((Also sorry if it’s really hard to understand what I did, I can try to write it down and post a picture of my work if possible)). [/QUOTE]
Insert quotes…
Post reply
Forums
Homework Help
Introductory Physics Homework Help
Calculating total Coulomb force vector ?
Back
Top