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Magnitude of the electric force?

  • Thread starter danish1991
  • Start date
  • #1
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Need help calculating a problem, the questions states that. "Three charges are located at the corners of an equilaterial triangle. What is the magnitude of the electrical force on q1? Im really confused with this problem, i been trying to solve this problem and still had no luck ANY HELP WILL BE REALLY APPRECIATED!!
q1=+2.0uc
q2=+2.0uc
q3=+2.0uc
distance between each 20cm
Its shaped as an triangle q1 being on top and q2 and q3 being on the corners.
q1=+2.0uc
/\
/ \
/ \
20cm / \20cm
/ \
/ \
q2=+2.0uc /_______ \q3=+2.0uc
20cm
 
Last edited:

Answers and Replies

  • #2
559
8
Well start with the equation:
[tex]F=\frac{kq_{1}q_{2}}{r^{2}}[/tex]
for each of the particles. Add up the vectors in the x and y directions.
 
  • #3
10
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How would you determine the number of vectors? Sorry but im really bad at physics
 
  • #4
tiny-tim
Science Advisor
Homework Helper
25,832
249
Add up the vectors in the x and y directions.
sorry, iRaid, but that's really not clear :redface:
How would you determine the number of vectors? Sorry but im really bad at physics
there's only two vectors, one from each of the other two charges

you need to find the magnitude and direction of those vectors, and then add them as vectors

do you know how to add vectors?​
 

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