Recent content by ryanmcarthy

Homework Statement An a.c. voltage, V, comprises of a fundamental voltage of 100 V rms at a frequency of 120 Hz, a 3rd harmonic which is 20% of the fundamental, a 5th harmonic which is 10% of the fundamental and at a phase angle of 1.2 radians lagging. (i) Write down an expression for the...

Brilliant, thank you! So I get these now: M0=0 M1= -(5*1*1/1)= -2.5kNm M2= -(5*2*2/2)= -10kNm M3= (26.7*1)-(5*3*3/2)= 4.2kNm M4= (26.7*2)-(5*4*4/2)-(10*1)= 3.4kNm M5= (26.7*3)-(5*5*5/2)-(10*2)= -2.4kNm M6= (26.7*4)-(5*6*6/2)-(10*3)= -13.2kNm M7= (26.7*5)-(5*7*7/2)-(10*4)= -29kNm...

I've drawn the shear force diagram, so would it be possible please for someone to show me how to calculate the points to draw a bending moment diagram? Not to draw the diagram for me, but show how you calculate the points? Ma = 0 . . . m10 = 0 I know the rules state you need to try, but I have...

I've just realized that answer 1a) is incorrect :( so please ignore that one.Thanks :)

Please could you look over my questions and what answers I've come up with please, and see if I have done them correct? Thanks a lot Questions: My Answers: Thanks :)

Thanks a lot for that, I will re-do them.

Could you point out which calculation please?

Columns - Buckling and Failure Hi all, Could some one clever check my answers please? I think and hope they are right, but any help would be great! Question: http://i570.photobucket.com/albums/ss141/mcarthyryan/Pg5-1.png MY answers...

Hi Guys, Apologise for lack of input in my previous post :) I've had a go at the answers, and hopefully these are nearly there, could you possibly check them out? a) Euler buckling Yield load Pc = σy A = π2 E I / leff2 Fixed ends σy A = π2 E I / leff2 = 4 π2 E I / l2 or...

Hi, I'm not sure on the equations :( And the course is Electrical and Electronic Engineering, hence why I am struggling with physics questions. Thanks a lot

Hi All, I am really struggling with a question, and this is the last one I need to complete and then I can submit my paper. I appreciate you don't like to just give out answers, but I can't work anything out. I am doing an electrical course, but for some reason there are some physics...

Hi, Thanks a lot for the help!

Yes, that is me. That isn't what I didn't understand... I don't understand what you mean by "You could take his shear diagram, calculate the area under it at each location specified in the current problem, and obtain your bending moments"

Is this more like it? Ma = 0 M1 = (-5 x 1) M2 = (-5 x 2) + 26.7 M3 = (-5 x 3) + (26.7 x 2) -10 M4 = (-5 x 4) + (26.7 x 3) - (10 x 2) M5 = (-5 x 5) + (26.7 x 4) - (10 x 3) M6 = (-5 x 6) + (26.7 x 5) - (10 x 4) M7 = (-5 x 7) + (26.7 x 6) - (10 x 5) M8 = (-5 x 8) + (26.7 x 7) - (10 x 6) + 53.3 M9...

Actually, I can see my attempt is totally wrong :(