- #1
Manodesi524
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Homework Statement
http://postimage.org/image/y4h1ubp8b/
Homework Equations
F_xy=(k*q*q)/r^2
The Attempt at a Solution
This is a problem involving Electric Force:
http://postimage.org/image/y4h1ubp8b/
My goal is to find the direction and magnitude of q1. However, every time i do it, i get .04 N @ 189 degrees when our teacher says it is 262.
I am also confused about what angle i should use when finding the components on q1 and q3. Is it 64 degrees or 26 degrees? Can someone show me what angle i should use and why?
I have a big exam tommorow and i am very stressed. I'd love an answer.
The Forces are as follows: F12=.054, F13=.014, F23= .11
Here is some work: sin(26.6)*.014= .006, which is x component of vector
cos(26.6) *.014- .054=-.41, which is my y component
I do phythag to get my force, which is .41 Newtons.
When I do inverse tangent of .006/.041, i get 8 degrees. I add this to 180 to get a final answer of 188. My teacher said its near 262. What did i do??
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