Recent content by studenthelp10

thanks, for the explanation :). I think i get it a bit more now It hard to find any sites showing the radius of the track so I think i will use the equations to try and find the radius like a=v^2/r I have to log off now, but ill will post back later Thanks :)

Thank you for the replies :0 so how would you then calculate the g forces when it swings by the bottom ? also how did you get the radius measures? I have no idea what you mean by "axis of rotation is in line with the velocity. The 'g' force is a cross product of linear velocity with angular...

Hi Im a bit confused about where to go with this problem - could anyone possibly help please ? I have to determine the g forces for the kingda ka rollercoaster according to research the kingda ka rollercoaster is 139m tall it shoots up on a 90 degree angle to the right- reaches the peak of the...

spaghetti is not very rigid or strong (youngs modulus), so we will need to group them up- . in numbers spaghetti is much stronger under stress, because the stress is distributed over the many spaghetti strands instead of 1 for example. This will mean that the spaghetti bridge will strain less...

i just wanted to know one more thing, i have to write a synopsis on physics involved in our spaghetti suspension bridge design and I am ok with all of them except for how youngs modulus of elasticity is applied to bridges. my answer is : youngs modulus of elasticity applies to bridges because...

re jambaugh: i found this article on dampers http://science.howstuffworks.com/engineering/structural/smart-structure2.htm I think i know what the dampers doing? i think that it is resisting the (tension) of the building being pulled outwards because the mr liquid turns solid and as the metal...

re: tiny tim: yes that makes sense - the vortices are connected and they move away from the bridge and because they are in chains they are 'connected' so one after the other the vortices hit the bridge and alternate.

oh yeah jambaugh- i read that they used "dampers" to stop the bridge from moving up and down any further. I think i need to read what dampers actually do- think it says they absorb vibrations. I also read that they build bridges in different sections was a second solution. also tiny tim-...

The explanation you didnt understand was when i was trying to explain the diagram to you using the technical words in the diagram and fully understand the text underneath you posted earlier about wind shedding. I am trying to understand how the vortices are created after it hits the object - i...

http://science.howstuffworks.com/engineering/civil/bridge2.htm has a diagram of a plank under tension and compression at the same time- from bending

ooh so its a bit like on the diagram - the flow of wind hits the surface of the object and runs on top and beneath the object. the high velocity fluid is the wind flow and the high velocity fluid is closest to the object and has high pressure, where as the high velocity fluid further away from...

thanks scutter bob i took into count what you said and i researched vortex shedding http://www.mecaenterprises.com/vortex_shedding.htm shows a diagram. What I think is happening is that the wind force blowing from left to right on the diagram and traveling above and below the circle. Then...

Travis Kings post from earlier Noted: "When they say the tension in the cables was overcome by compression, what they mean is that the tension in the cables (usually taut) went to, basically, zero as the bridge sections they were attached to shifted. They word it poorly and, in my opinion...

so is the second paragraph all i have to say - is there any way i can improve it ? by using information from other sources i found. Im not sure if these were all the physics principles involved in the collapse?

So if I am putting this altogether: is it like this? The tacoma narrows bridge was very light and because of this it had less tension in its cables compared to other bridges. This is because the weight of the bridge pulls down on the cables and gives it tension, but since the tacoma is light...