Recent content by akhmed966

I know in Hollywood people fall a couple stories and grab onto a pole or something and survive, which most of the time doesn't seem too far fetched. But what if you were falling at terminal velocity and grabbed onto a horizontal pole? (The pole being a cantilever, and not flexible or anything at...

Final heat, and in our thermodynamics class, we don't use moles (n), we use m for mass.

That's what I left it as, 1Q2 = 50*.717*m Would that be right?

Homework Statement Air is heated from 300 to 350K at constant volume, Find 1Q2. Homework Equations 1Q2 = m(u2-u1)+1W2 u2-u1 = cv(t2-t1) The Attempt at a Solution The PV diagram of the process is straight up, so the area under the curve is 0, so the work done is zero. Cv is .717...

No, thanks a ton.

Oh, thank you so much. I took the moment about D, and set the two remaining forces equal to zero. Sum of Moments about point D = r x Fb + r x Fa = 0, would that be right? Then I just gather the i, j, and k terms and set them each equal to 0, and have a total of 6 equation (3 from the sum of...

B? That's what he expects the answer to be in, but I have never handled a problem in that manner so I don't know how to modify the equation. Unless that is stating that it only has a force normal (N) opposite to that of the wall, so all I would need would be Bx (N = Bx) and not By and Bz? If...

Ok, thanks. I got three equations so far. Sum of X = Tcd*.617+Ax+Bx = 0 Sum of Y = -Tcd*.154+Ay+By = 0 Sum of Z = -Tcd*.77+Az+Bz = 2450 7 unknowns and 3 equations. Not looking too good so far. So, I was thinking I should take the moment about point A since that would reduce 3 unknowns, but I...

Homework Statement In the attachment Homework Equations Sum of the forces in the X, Y, and Z Sum of the Moments in the X, Y, and Z. The Attempt at a Solution I don't believe I need help solving the problem, I just need help setting it up. I can find the vector of CD, which...

The tension in AC = BC? Do you mean the tension in BC = DC? I still don't see how the equation was formed, could someone explain how the equation was determined?

I meant the positive X axis. Also, I did draw a free body diagram, but I am not sure why I couldn't add the sum of the components.

http://img10.imageshack.us/img10/8880/capturejfu.jpg I did arctan(12/5) to get the degrees + 180 to get the angle from the X axis to B, then I just split the angles into components. I did 100*cos(246) + 100*cos(theta) = 0, and I got 67 degrees. Then I was doing the Y components, and realized...