You are helping a friend move, and you need to load a 2.65x10^2 kg box of books. You slide the box up a ramp, which has an incline of 30 degrees and a coefficient of static friction of 0.45. You apply the force on the box at an angle of 39 degrees with respect to the ramp.
Calculate the minimum force needed to slide the box up the ramp.
Net force = ma
The Attempt at a Solution
I'm not too sure how to draw the FBD for this situation since the static friction may be working in the same direction as the Fapp since the box would slide downwards if no Fapp was affecting it. But I don't really know.