@Inferior, then why post? Gtfo already. Anyway, I didn't use a coordinate system jhae. If you have a suggestion about how to use one, please explain. ;)
About that help thing... Where is it exactly?
Oh, and whoever said that my math was wrong, it was... sort of. I did use 116.77 in my calculations and that is the right number. I wrote it wrong in the original post. /goes to fix
@Jay, Firstly, the force was already broken up, so yes the component of the force in the direction of the plane can indeed be bigger than the force in the x direction. I'm not sure what to do about the component of weight, that's rather why I posted the question. You answered nothing.
@Legend...
Homework Statement
A horizontal force of 100 N pushes a 17 kg block up a frictionless incline that makes an angle of 31° with the horizontal.
Find the acceleration of the block.
Homework Equations
F = ma
F_g = mg
The Attempt at a Solution
Cos31 = 100/(component of force along plane)...