Recent content by Naso

There is nothing excessively dangerous to the torrent format, the danger comes mostly from what you're downloading; some professional companies actually distribute legitimate content via the Bittorrent protocol, but again so do many malware distributors — it's up to you to try and figure out...

That is the correct value; it is positive because you already considered it as being subtractive in the ∑Fx equation

Oh alright, Edited!

Yes, you are supposed to consider the reaction force to be the vectorial sum of the normal and frictional force (which some books call "tangent reaction")