- #1
Ella1777
- 15
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Thread moved from the technical forums, so no Homework Template is shown
given: 128kg F1 = 28 N, F2 = 57 N, F3 = 38 N, θ1 = 30°, and θ3 = 60°.They are asking for the angle (measured relative to the positive direction of the x axis in the range of (-180°, 180°]) of the asteroid's acceleration?
The problem is displayed on quadrant I and IV
for vector notation I got Fx=(100.2N)i + Fy=18.91 j
So far I've got the acceleration part correct
$ a= \sqrt (0.783)^2 + (0.148)^2 a=0.797 m/s^2 $
BUT I'm trying to solve for the angle and the significant figures by 3rd sigfig
several other sites been doing tan^-1 (ay/ax) or tan^-1 (Fx/Fy) and i tried both but I am getting it wrong somehow.
should I do the arc tan by ay/ax or Fy/Fx and why should I ?
Thank you!
The problem is displayed on quadrant I and IV
for vector notation I got Fx=(100.2N)i + Fy=18.91 j
So far I've got the acceleration part correct
$ a= \sqrt (0.783)^2 + (0.148)^2 a=0.797 m/s^2 $
BUT I'm trying to solve for the angle and the significant figures by 3rd sigfig
several other sites been doing tan^-1 (ay/ax) or tan^-1 (Fx/Fy) and i tried both but I am getting it wrong somehow.
should I do the arc tan by ay/ax or Fy/Fx and why should I ?
Thank you!
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