Recent content by musicmar

Hello, I am in my fourth of five years as a BS/BA candidate in civil engineering and music at a liberal arts school. I'd like to get my masters degree after my 5th year. I'm considering staying here for one more year to do it. I have a great research adviser, there is a stipend offered, and...

We had another problem that explicitly told us to use the Moody Diagram, so I guess I didn't realize it would be necessary, but you are right. I didn't use density because it is included in the kinematic viscosity, nu(didn't bother to find a symbol for it). I did get the right answer from the...

Homework Statement Given: water at 20°C flows through a 3cmID smooth brass tube at 0.002 m^3/s. Homework Equations V=Q/A f=64/Re Re=VD/(nu) The Attempt at a Solution V=Q/A=(0.002 m^3/s)/((∏/4)*(0.03 m)^2) = 2.829 m/s Re=VD/(nu) = (2.829 m/s)*(0.03 m)/(1x10^-6 m^2/s)=84882.64...

Homework Statement Calculate the density in lbm/ft3 with the given formula: ρ=p/RT where p=35 psi, R=1716 ft-lbf/slug-°R, and T=100°F. We have access to a table with basically any unit conversion we would need. The Attempt at a Solution 100°F=37.78°C=310.9278K (35 lb/in2)(144 in2/1...

Also, I assume that "under the concentrated load" means at point c, right?

Homework Statement See problem number 2 as attached. The Attempt at a Solution I found the reactions and shear and moment diagrams for the original beam. I also drew the conjugate beam and loaded it with M/EI. My only question for this problem is what the 4EI and EI under the beam...

I got RC'y=1425/EI and MC'=4387.5/EI . I also found the equations for V and M of the conjugate beam. Do I need to consider end conditions to find integration constants? As it stands right now, my shear diagram goes down to -900/EI at x=3, and with the equation I have for 3<x<5, it would go...

Homework Statement Construct the slope and deflection diagrams. I've attached the problem with the original diagram (problem #1). The Attempt at a Solution Considering the number of diagrams required, I thought it would be best to attach a photo of my work. I drew the shear and moment...

Well, I think I've got it now, and in any event, I've now turned in the assignment.

Wow. Maybe I should try doing homework when I am actually awake. diameter...radius So, A = 0.0131 in^2, and σ= 15238.1 psi.

Oops. I read it as the outer diameter. Now I get A = 0.0805 in^2 and σ = 2484.37 psi.

1. Yes, I have. 2. I believe so: A = ∏(0.5)2-∏(0.5-0.025)^2 = 0.0766 in2 σax=P/A = 200 lb/ (0.0766 in2) = 2611.77 psi 3. just remembered that we were told to ignore the internal pressure Is my axial stress correct? And how do I get σ1,2 from here?

Homework Statement See attached jpg for problem statement and diagram. I know we didn't discuss this type of problem in class. The rest of this homework set has been solving stress transformations with Mohr's circles for a given state of stress. I know how to find τxy (that was supposed to...

Homework Statement The diameter of a shaft in an optical storage drive is normally distributed N(μ,σ2). The drive specifies that the shaft be 0.2500 ± 0.0015 in. Suppose μ= 0.2508 in and σ = 0.0005 in. What fraction of shafts conform to the design specifications? The Attempt at a...

Homework Statement This would be really difficult to type, so I've attached the given problem and my work. I think it is legible for the most part, but let me know if you have problems reading something. The Attempt at a Solution My shear diagram worked nicely. I've run into a problem...