Recent content by eluu

Ok thanks cos i was getting worried i wasn't getting the same answers for P and D that is given in one of the tutorial books that I'm using where my answers just differed by column arrangements

I understand this but is there more than one answer for D? Using my example in the 1st question i could get 1 | 0 | 0 0 | 3 | 0 0 | 0 | -4 or 1 | 0 | 0 0 | -4 | 0 0 | 0 | 3 etc..simply by assigning a different first eigenvalue from either 1, 3, or -4

So it doesn't matter the order in which you order the eigenvalues? Cos that would produce a slightly different diagonal

Hey guys, I'm having trouble trying to understand how the diagonalised matrix is produced e.g. A = 1 | 3 | 0 3 | -2 |-1 0 | -1 | 1 I've calculated the eigenvalues to be 1, -4, 3 My question is, how do we know that D = 1 | 0 | 0 0 | 3 | 0 0 | 0 | -4 and not any other combination of 1...

Ahh whoops, i see it now :) Now i get the first part with t = 10s and a displacement of 1833.333m Thanks cristo!

[SOLVED] Motion Question (Dynamics) EDIT: I just realized this question was better suited in this forum than the engineering one, sorry :( Homework Statement The rocket sled starts from rest and accelerates at a = 30 + 2t until its velocity is 400m/s. It then hits a water brake and...

Homework Statement The rocket sled starts from rest and accelerates at a = 30 + 2t until its velocity is 400m/s. It then hits a water brake and its acceleration is a = -0.003v^2 m/s^2 until its velocity decreases to 100 m/s. What total distance does it travel? Homework Equations v = u...

Ok don't worry i think i figured it out

How would i calculate the stress and strain with the results from a lab below: Steel’s original diameter: 8.00 mm Steel’s original length: 49.96 mm Steel’s final diameter: 4.64 mm Steel’s final length: 63.17 mm Steel’s maximum load force: 26.43 kN I also have an MS Excel table of time, laser...