Recent content by SubZer0

Actually, thinking more about this, the resultant moment would simply be the sum of the moments about point A, and would not include the reaction moment at the fixed end. So above, the resultant moment would simply be sum(M)=FL.

Hi all, I just wanted to get some clarification on 'resultant moment' when calculated in 2D for a beam which is fixed at one end (point A), and has a load applied at the opposite end (point B). My interpretation of 'resultant moment' would be calculated as sum(M) = Ma + FL, where Ma is the...

Thanks, Mark44 and SammyS for your responses. Have taken on board your advice for the symbols for future posts, SammyS.

Hi all, What is the general set notation for specifying a vertical asymptote and domain for a periodic function? For example, if I have a periodic function which has a period of pi/2, and within that period, a vertical asymptote occurs at pi/4. The domain is R, excluding that vertical...

Thanks, Orodruin, this makes perfect sense now. Thanks for the explanation.

Homework Statement The problem is to calculate the determinant of 3x3 Matrix by using elementary row operations. The matrix is: A = [1 0 1] [0 1 2] [1 1 0] Homework EquationsThe Attempt at a Solution By following the properties of determinants, I attempt to get a triangular matrix...

Hi, kuruman, thanks for the reply. The problem that I'm having at the moment is just solving the two equations above for the angle component. Instead of putting all of the force diagrams, etc, I just reduced it down to a problem of solving those equations. The goal is to get two equations...

Homework Statement This is an equilibrium problem with 3 unknown forces, and 2 unknown angles. I have resolved the horizontal and vertical forces. Homework Equations Horizontal components of forces: -W1cos Θ + W3cos ∅ = 0 Vertical components: W1sin Θ + W3sin ∅ - W2 = 0 Where W1, W2, W3...

Thanks heaps for the reply, haruspex. I think I just needed that little confidence boost you gave me to help solve the problem. So now I have the full set of equations: -a*cos(45 deg) + 16 = Wx -a*sin(45 deg) = Wy Wx = 8 Wy = b Slotting Wx into the first equation; 8 = 16 - a*cos(45 degrees)...

Homework Statement A cyclist traveling east at 8 km/hr finds that the wind appears to blow directly from the north. On doubling his speed it appears to blow from the north-east.. Find the actual velocity of the wind.[/B]Homework Equations Wind(relative) = Wind(Actual) - Velocity(cyclist)...

Hi all, Just a quick question about calculating the mass MoI for aircraft (accurately). Is the whole of the aircraft broken up into pieces, the mass calculated for the component, and then transformed into a point mass? Or the integral calculated over the entire mass of the aircraft as point...

I guess, looking at the linear momentum equivalent, then the angular momentum is a measure of whether the object will continue rotating when an external force is applied to the object? Is this effectively what angular momentum represents?

Hi all, Just a quick question about what practical uses knowledge of the angular momentum of a system has? For example, in an aircraft system, what would the angular momentum vector be utilised for? It seems like a kind of quasi-theoretical term that has minimal purpose, but I doubt this is...

Thanks for the reply, Andy. I looked into some physics texts, and I think what was throwing me off was the fact that a rotation of a particle [1, 0, 0] around y [0, +/- 1, 0] in the equation (what you were referring to above as the derivative accounting for the rotation of the frame), ended up...

Hi all, Can anybody explain the Transport Theorem (http://en.wikipedia.org/wiki/Rotating_reference_frame#Relating_rotating_frames_to_stationary_frames) in more non-physicist terms? I simply can't wrap my head around the visual of this theorem, which has the gist of: d/dt f = df/dt +...