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http://online.physics.uiuc.edu/cgi/courses/shell/phys102/fall06/prep2a.pl?practice/exam1/fa00
Question 7
i know that the equation is
Fx = (-)(K)(12)(6) / (4^2) + K (12)^2 / (Square root of 32)) * Cos theta
Fy = K (12)(6) / 4^2 - K(12)^2 / (square root of 32)) * Sin theta
I just need to for somone to explain how come for the first variable is negative. I don't understand why the signs are the way they are
Question 7
i know that the equation is
Fx = (-)(K)(12)(6) / (4^2) + K (12)^2 / (Square root of 32)) * Cos theta
Fy = K (12)(6) / 4^2 - K(12)^2 / (square root of 32)) * Sin theta
I just need to for somone to explain how come for the first variable is negative. I don't understand why the signs are the way they are
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