Recent content by RStars

Looking back on my calculations I have found out that I have made an error in the j calculation. It should be 18.37. However when this is changed I end up with tan(angle)=18.37/-15.76 This gives me an angle of -49.37 (Is this correct? ) Also since it is now x-axis negative and y positive...

I am not too sure, would NNW be 22.5 degrees north from NW? and WNW be 22.5 degrees west of NW? Also I have another question about the OP. So far my working out is: A=40j B=10i C=15cos(20)i-15sin(20)j D=-40cos(50)i-40sin(50)j E=-20cos(45)i+20sin(45)j i=10+15cos(20)-40cos(50)-20cos(45) =...

Ok thanks a lot that's exactly what I was after.

Hey, how do you infer that from the question? Is Northwest always dead on in the middle?

Homework Statement I am having quite an issue solving this resultant force question: The following forces act on a point in the same plane: 40N direction due north; 10N direction due east, 40N direction 50° south of west, 20N direction northwest and 15N direction 20° south of east...

Hey, I was going through some mechanics notes and came across this quadratic equation to solve for x. In my notes it is supposed to equal 3 however I do not get that result. I am not sure if I am simplifying it wrong or what. I am ending up with 2.12 for the positive value. Please let me...

Homework Statement A Beam ABCDE is 10m long and supported at its left hand end A and at a point D which is 9m to the right of A. The beam carries concentrated loads of 5kN at B, which is 2m to the right of A, 10kN at C, which is 6m to the right of A, and 3kN at E. It also carries a distributed...