What is the magnitude and direction of resulting force with given values?

[SadPanda6022]

I attached problem.

I got F₁ = 2.7x10^-8
and F₂ = 8.3x10^-9

sqrt(f1^2 +f2^2) = 2.818x10^-8

theta was inverse tan of f1/f2. got 72.8

please help :(

 

[SteamKing]

I attached problem.

I got F₁ = 2.7x10^-8
and F₂ = 8.3x10^-9

I don't get these forces. Perhaps you should attach you calculations.

sqrt(f1^2 +f2^2) = 2.818x10^-8

theta was inverse tan of f1/f2. got 72.8

please help :(

Re-check your calculations for F₁ and F₂.

 

[SadPanda6022]

I think I know what I did...dumb mistake.

Did you get:
f1=2.04E-7
f2=1.762E-7

NEW magnitude= 2.69E-7
NEW theta=49

 

[SadPanda6022]

and I was using F=G(7.30)(7.30)/(0.132)^2 for F1 and F2 just subbed in 0.427.

Thanks for your help.

 

[SteamKing]

I think I know what I did...dumb mistake.

Did you get:
f1=2.04E-7
f2=1.762E-7

NEW magnitude= 2.69E-7
NEW theta=49

F₂ is still incorrect.

 

[SadPanda6022]

Yeah I don't know what I did there. I got it now though. magnitude:2.05E-7 and direction of 85 degrees.

Thank you!