Recent content by Freshtone

right after adjusting all the values i have got the same values for x and Y cords ...(1.02, 0.89) On to the second question and I am having a little trouble understanding what i need to find ..as the question states it wants me to find the inertia about the z axis ? any pointers to help ?

oh wait i see i have treated the radius as the diameter ! you are right then ! let me just try to work it out myself quick =) so sorry about that ! too much maths has me not thinking straight !

Im not sure how that can be correct as my whole systems x length is 1.02m ..if the mass in the x-axis is so far as you say then the system would very unbalanced as all pipes are the same mass , size and length !

i also think that for the second question we would use the equations as follows ... Sx =Σ(A*y) = Yo*A but in the z axis ?

Hey thank you! I have now "i think" worked out the first question at least...i used some trig to get the height on y-axis for A. this was my work so far ... Xo=(7870*0.51+0.255*7870+0.765*7870) / 3(7870) and got Xo = 0.51m my Yo was similar and i got the height from x up to A as 0.825m. so Yo...

By saying B lays into the Y axis you can see here it is easier to see instead hehe. By the z axis i think they mean that the pipes have a length of 2 meters going in the z axis which obviously is directly into the picture ...=)

Ah yes sorry i miss-copied the iron density..it was actually 7870kgm^-3 Sorry about that!...ill copy a picture of the setup so you can see ! =) thank you for the replies already !

Homework Statement System S is static and is comprised of 3 identical metal pipes A, B and C which are placed so that A lays ontop of B and C. B lays into the y axis. The length of the pipes are orientated parallel with the z axis. The outer and inner radius of each pipe is (Outer : 0.51m)...