Recent content by mneox

I am currently looking at this website: http://www.public.iastate.edu/~fanous/ce332/displ/homepage.html And this example that they went through: http://www.public.iastate.edu/~fanous/ce332/displ/homepage.html Why does that structure only have one degree of kinematic indeterminacy? I...

Thanks Jay. I successfully got the answer.

Thank you for your response. Ah yeah earlier I had thought about converting the loads on the diagonal member into perpendicular and parallel loads, but I was not sure if I was approaching it correctly. Maybe it's just late and my brain is half dead, but I can't seem to think of how to do it...

The question is to draw the shear and moment diagram for this frame structure. I think I can do the diagram part alright, but I'm confused as to how I can draw the FBDs for this structure. What I'm thinking is to split into two members, AB and BC. For member AB, I know that there's...

Homework Statement So I'm trying to do this problem right now. For the most part, I feel like I have 80% of the work done (in terms of finding certain unknowns etc) but I have no idea how to incorporate the θ=3°. What I mean is, what kind of equation can I set up that includes the angle...

Homework Statement hi guys, i just have some theory and general questions about circuits. hope you can bear with me and be able to help me out cause I'm trying to grasp the ideas. thanks! 1) i have a RC circuit that has a switch. if the switch was close for a long time and then opened...

I know rotation goes like Rot\theta = [cos\theta -sin\theta; sin\theta cos\theta] then reflection goes like Ref\theta = [cos2\theta sin2\theta; sin2\theta -cos2\theta] So since it was a composition Sa ○ Tb for the first one, i tried to multiply the matrices for rot and ref together...

How do I apply them w/o vectors??

Homework Statement if Sa: R2 -> R2 is a rotation by angle a counter-clockwise if Tb: R2 -> R2 is a reflection in the line that has angle b with + x-axis Are the below compositions rotations or reflections and what is the angle? a) Sa ○ Tb b) Ta ○ Tb Homework Equations I don't...

Thanks for the reply! I see, but which part is this radius-vector though? Is it the (0,y) from A = {(0,y) | 0<y<1}? How do you know what value of y to use..? Could you explain what A = {(0,y) | 0<y<1} even means? I feel like I'm on the verge of grasping this but at the same time I'm lost. Thanks.

Homework Statement If you have the matrix X = [ 1 1; 1 0] and Y = [ 0 -1; 1 0] and line segment A = {(0,y) | 0<y<1} Draw the images of line segment after you transform it by matrix X, Y, XY, YX (the image of A after transformation by linear transformation of L is {L(a) | all a in A} Homework...

Won't that give me a zero matrix? How would that help solve the system?? Sorry if I'm asking such stupid questions but it's been a long week..

Thanks for clarifying ehild! I understood my answer much better through your reply. collinsmark, thanks for the superb post. It was incredibly thorough and clear. Regarding your comment about my equation: 4i1 - 2i2 - i3 = 10 Sorry about that. I actually did some other steps to reach...

Homework Statement Solve the system of equations for Bx = 0. Where B is the following matrix: [ 5 -1 ] [ 2 2 ] [ 1 4 ] and the x is some vector I am assuming.. is it: [ x1 ] [ x2 ] Homework Equations The Attempt at a Solution So what I figured was that I should do this...

um, sorry to bump but anybody? i'm still lacking clarity, any sort of input would be greatly appreciated...thanks