Magnitude of the electric force?

AI Thread Summary
To calculate the electric force on charge q1 in an equilateral triangle configuration with three equal charges, the formula F=k(q1*q2)/r^2 is used for each pair of charges. The distance between each charge is 20 cm, and since q1 is at the top, it experiences forces from q2 and q3. To find the total force on q1, the individual forces from q2 and q3 must be calculated and then combined as vectors in both x and y directions. There are only two vectors to consider, one from each of the other charges. Understanding vector addition is crucial for determining the resultant force on q1.
danish1991
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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? I am 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
 
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Well start with the equation:
F=\frac{kq_{1}q_{2}}{r^{2}}
for each of the particles. Add up the vectors in the x and y directions.
 
How would you determine the number of vectors? Sorry but I am really bad at physics
 
iRaid said:
Add up the vectors in the x and y directions.

sorry, iRaid, but that's really not clear :redface:
danish1991 said:
How would you determine the number of vectors? Sorry but I am 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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