Recent content by weedannycool

Cheers. Just gaps in my learning really. Will the answer be the same if it was B*A? I think i must have been doing the order of calculation wrong. In my other tries i have done T1T2T3, which is not the same as the formula . So i guess it must be the other way around

!Euler transform matrix multiplication help! Homework Statement This may be rather simple but i am really struggling to complete a 3 3x3 matrix multiplication. I NEED STEP BY STEP WORKING!. This would really help me I understand the theory. Basically I have three matrices T1= cosψ sin ψ...

We are trying to get a formula for a and b (them being the same lenght). we know length c, circumference of the circle and the length of the arc between a and b, radius of cirle and we think we could work out the angle between the lines. Thanks in advance Danny

thanks. but i still can get my head around it. do i need to use the specific density to get rid of the mass otherwise i can't solve it.

i kinda know most of the dimensions of the groups of by heart. How did u make those equtions so fast ! i have for the first pi group \omegaDV\rho =T-1(ML-3)a(L)b(LT-1)c i am unsure wether that is the correct dimision for \omega though.

just realized L is lenght! is depth L as well then

Homework Statement it is likely that the cross-sectional design of a new bridge will give arise to a vortex shedding from its downwind side. Such behaviour can creat harmful periodic forses on the bridge structure, the bridge designers is keen to determine the frequency of shedding. He...

thank you. i was meaning that the abosolute value is never negative. great help.

if i have an equation of a graph and it had a modulus in it. how do i find where it crosses the x and y axis. From what i know inside the modulus is alway positive. y=|x+1|-1

thanks guys. relative motion is a blast.

right so i have the to equations squared. not positive with what i should to next though. is there a method for solving these. thanks for the help so far

Homework Statement i have 2 equations: 400cos \varthetaa = 300 + Vacos45 and 400sin \varthetaa = Vasin45 Homework Equations The Attempt at a Solution i have no clue, maybe square it. thanks

Homework Statement i have 2 equations: 400cos \varthetaa = 300 + Vacos45 and 400sin \varthetab = Vbsin45 Homework Equations The Attempt at a Solution i have no clue, maybe square it.

so i suppose it depends on the angle? but don't they have to be strictly parallel?

Can anybody tell me what a couple is. From what i gather it is when two forces are equal, opposite and parallel. But but if 1 force is bigger than the other say a 2 and a 3N force could it be said that there is a couple of 2N forces ? Does it have anything to do with moments? __________ Daniel