holy crap what a guess i mate.. I remembered seeing something about extrusion so I took a punt and looks like it payed off.the coating of the cables is done through extrusion. but i agree this test was extremely difficult. i didnt even attempt to "finish off" the drawing of the aeroplane door hinge. that was bs
Wouldn't that be due to the fact that when you take a moment from a roller, you only end up with the vertical forces?Mmm yes, you are right if you sum the vertical force you get 17.3 as vertical, however I also took moments from the right hand side reaction and got 17.3.. I think the angle support confused the f out of me
I thought it's just that rollers always have the reaction perpendicular to the horizontal. I wasn't aware that if you take moments about a roller (or from it) that you only find vertical forces.Wouldn't that be due to the fact that when you take a moment from a roller, you only end up with the vertical forces?
Yep, I did the same.i did
PE=KE
mgh=.5mv^2
rearranged to
v=(2gh)^.5
where h=700sin40
Moments can only find the vertical components. To find the NET force on a pin joint you need to consider forces horizontal and vertical. Don't have to worry about this on a roller as there is only force perpendicular to the plane its on.Wouldn't that be due to the fact that when you take a moment from a roller, you only end up with the vertical forces?
what did you get for CE or whatever they specified? I got something like 543NMoments can only find the vertical components. To find the NET force on a pin joint you need to consider forces horizontal and vertical. Don't have to worry about this on a roller as there is only force perpendicular to the plane its on.
What I did was use moments to find reaction at the roller support and then used sum of forces horizontal and vertical to get the pin joint reaction.
I got 8.9 kN... doesn't give me faith that the units were in Newtons thoughwhat did you get for CE or whatever they specified? I got something like 543N
I got 8.9 kN... doesn't give me faith that the units were in Newtons thoughwhat did you get for CE or whatever they specified? I got something like 543N
Lol same here as well !hahahha same here!!! LOL
Yeah, that's right. Anyways, I ended up with a resultant force of 22 kN at 50-ish degrees, so hopefully the result ends up being satisfactory. =PMoments can only find the vertical components. To find the NET force on a pin joint you need to consider forces horizontal and vertical. Don't have to worry about this on a roller as there is only force perpendicular to the plane its on.
What I did was use moments to find reaction at the roller support and then used sum of forces horizontal and vertical to get the pin joint reaction.
I think I had tensionYeah, that's right. Anyways, I ended up with a resultant force of 22 kN at 50-ish degrees, so hopefully the result ends up being satisfactory. =P
Also, I ended up with 9 kN (8.9 rounded up) for CE, too. Compression or tension?
Yes it was 9 kN under compression.Yeah, that's right. Anyways, I ended up with a resultant force of 22 kN at 50-ish degrees, so hopefully the result ends up being satisfactory. =P
Also, I ended up with 9 kN (8.9 rounded up) for CE, too. Compression or tension?
I heard that a high 80 raw was a state rank a couple of years ago so probably around 75-79 + for this exam, im taking a guess?whats the band 6 cut off usually around?