Mechanical Engineering - Engineering Mechanics - Discussion

The answer C is correct. Regarding B, you will not get zero or equilibrium if you sum just the forces. By this I mean, not resolving inclined forces into their components will make a wrong result. You can't add the inclined forces at an angle directly with forces that are non-inclined (angle=0). Thus first resolve all of the forces into horizontal and vertical components, sum them and see the value. I hope you understood it.