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Engineering Thread

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Comments

  • #932
    TheAmateur
    Registered Users, Registered Users 2 Posts: 582 ✭✭✭TheAmateur


    Yep that seems to be it alright. Of course as soon as I asked the question I found it in my notes, written in big letters.
    "Centripetal acc. = Friction force"


  • #933
    Brian
    Registered Users, Registered Users 2 Posts: 5,699 ✭✭✭Brian


    The acceleration in this case is what keeps the car going around the bend. If it weren't for friction, you'd get some serious understeer.


  • #934
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,265 Mod ✭✭✭✭godtabh


    TheAmateur wrote: »
    Oh yeah... I meant d too... yep. Em, just out of curiosity, why would the centripetal force come from the road? And why is it "fictional"?

    roads are banked to stop cars flying off them at high speeds

    Do engineers get multiple choice questions these days?


  • #935
    Jonathan
    Moderators, Education Moderators, Home & Garden Moderators Posts: 8,303 Mod ✭✭✭✭Jonathan


    kearnsr wrote: »
    Do engineers get multiple choice questions these days?
    Yea.. keeping the old stats up you know?


  • #936
    PurpleFistMixer
    Registered Users, Registered Users 2 Posts: 5,851 ✭✭✭PurpleFistMixer


    "Fictional" forces are basically forces due to the motion (ie acceleration) of the body, as opposed to some physical... eh, force. As in, you're in an accelerating coordinate system and measure some weird acceleration-causing force seemingly arising from nowhere, which, if you were in the "lab" frame would just be the resultant acceleration.

    ...If that makes any sense. That's how I think about it anyway.


    However, after reading over the last few posts, it seems likely they were talking about friction.


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  • #937
    mathew
    Registered Users, Registered Users 2 Posts: 1,488 ✭✭✭mathew


    PurpleFistMixer wrote: »
    "Fictional" forces are basically forces due to the motion (ie acceleration) of the body, as opposed to some physical... eh, force. As in, you're in an accelerating coordinate system and measure some weird acceleration-causing force seemingly arising from nowhere, which, if you were in the "lab" frame would just be the resultant acceleration.

    ...If that makes any sense. That's how I think about it anyway.


    However, after reading over the last few posts, it seems likely they were talking about friction.

    *shakes head* Theoretical Physicists and their 'coordinate systems'... :P

    My guess is it was a typo.. Either way, the answer is D as said above. If it was a typo then they would have mentioned it in the exam


  • #938
    Jonathan
    Moderators, Education Moderators, Home & Garden Moderators Posts: 8,303 Mod ✭✭✭✭Jonathan


    PurpleFistMixer wrote: »
    "Fictional" forces are basically forces due to the motion (ie acceleration) of the body, as opposed to some physical... eh, force. As in, you're in an accelerating coordinate system and measure some weird acceleration-causing force seemingly arising from nowhere, which, if you were in the "lab" frame would just be the resultant acceleration.

    ...If that makes any sense. That's how I think about it anyway.


    However, after reading over the last few posts, it seems likely they were talking about friction.
    Don't be so precise...

    Engineering is all about taking guesses. :)


  • #939
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,265 Mod ✭✭✭✭godtabh


    Jonathan wrote: »
    Yea.. keeping the old stats up you know?

    No wonder grads know sweet FA these days.
    Jonathan wrote: »
    Don't be so precise...
    Engineering is all about taking guesses. :)

    Educated guesses. Pity they don’t give you multiple choice questions in the real world.


  • #940
    mathew
    Registered Users, Registered Users 2 Posts: 1,488 ✭✭✭mathew


    Will this building fall down?
    A. Yes B. No
    :P


  • #941
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,265 Mod ✭✭✭✭godtabh


    mathew wrote: »
    Will this building fall down?
    A. Yes B. No
    :P

    wheres maybe?


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  • #942
    Brian
    Registered Users, Registered Users 2 Posts: 5,699 ✭✭✭Brian


    kearnsr wrote: »
    wheres maybe?

    That's Yes.


  • #943
    mathew
    Registered Users, Registered Users 2 Posts: 1,488 ✭✭✭mathew


    Did you win???
    I hear there was no cash prize.. bit gay..


  • #944
    TheAmateur
    Registered Users, Registered Users 2 Posts: 582 ✭✭✭TheAmateur


    Group B something won the accuracy test, group C1 won the distance test (with a sawn off crutch and so much torsion the steel rods on both sides were bent into v shapes). I don't think they managed to get sponsorship for cash prizes this year. What did last year's winners get? Is there some kind of competition with the project in 2nd year too?


  • #945
    Boston
    Closed Accounts Posts: 17,163 ✭✭✭✭Boston


    There is a 200 euro price this year.


  • #946
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,265 Mod ✭✭✭✭godtabh


    Boston wrote: »
    There is a 200 euro price this year.

    so says the email i got today plus the Engineering department will match it with book tokens


  • #947
    Jonathan
    Moderators, Education Moderators, Home & Garden Moderators Posts: 8,303 Mod ✭✭✭✭Jonathan


    kearnsr wrote: »
    so says the email i got today plus the Engineering department will match it with book tokens
    How come you got it?


  • #948
    Boston
    Closed Accounts Posts: 17,163 ✭✭✭✭Boston


    kearnsr wrote: »
    so says the email i got today plus the Engineering department will match it with book tokens

    Bastarding book tokens. You know thats because of claims that kids spend cash on drink and drugs?
    Jonathan wrote: »
    How come you got it?

    Legends and Postgrads. /


  • #949
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,265 Mod ✭✭✭✭godtabh


    Jonathan wrote: »
    How come you got it?

    Apparently some of you needed some moral support


  • #950
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,265 Mod ✭✭✭✭godtabh


    Boston wrote: »

    Bastarding book tokens. You know thats because of claims that kids spend cash on drink and drugs?


    I just remembered that I have book tokens for when I for a first in 2002


  • #951
    mathew
    Registered Users, Registered Users 2 Posts: 1,488 ✭✭✭mathew


    kearnsr wrote: »
    I just remembered that I have book tokens for when I for a first in 2002
    I should probably spend mine at some stage too....


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  • #952
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,265 Mod ✭✭✭✭godtabh


    mathew wrote: »
    I should probably spend mine at some stage too....

    You used to be able to buy cds with in HMV not sure if you can do that any more


  • #953
    Jonathan
    Moderators, Education Moderators, Home & Garden Moderators Posts: 8,303 Mod ✭✭✭✭Jonathan


    kearnsr wrote: »
    Apparently some of you needed some moral support

    I'm in second year. Altho i might need some moral support to bother to do study for this 2e4 exam.


  • #954
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,265 Mod ✭✭✭✭godtabh


    Jonathan wrote: »
    I'm in second year. Altho i might need some moral support to bother to do study for this 2e4 exam.

    Whats 2e4 these day?


  • #955
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,265 Mod ✭✭✭✭godtabh


    Its party time for the post grads. Exams passed!


  • #956
    Jonathan
    Moderators, Education Moderators, Home & Garden Moderators Posts: 8,303 Mod ✭✭✭✭Jonathan


    kearnsr wrote: »
    Whats 2e4 these day?

    Solids and Structures with BOK and AOC.


  • #957
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,265 Mod ✭✭✭✭godtabh


    Jonathan wrote: »

    AOC.

    Good old duck


  • #958
    Jonathan
    Moderators, Education Moderators, Home & Garden Moderators Posts: 8,303 Mod ✭✭✭✭Jonathan


    kearnsr wrote: »
    Good old duck
    Private joke? :confused:


  • #959
    Peleus
    Registered Users, Registered Users 2 Posts: 784 ✭✭✭Peleus


    How are people going with 1e4? everyone else gonna fail ye?


  • #960
    godtabh
    Moderators, Science, Health & Environment Moderators Posts: 23,265 Mod ✭✭✭✭godtabh


    Jonathan wrote: »
    Private joke? :confused:

    We used quack every time we saw him. He didnt like it to much


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  • #961
    Jonathan
    Moderators, Education Moderators, Home & Garden Moderators Posts: 8,303 Mod ✭✭✭✭Jonathan


    kearnsr wrote: »
    We used quack every time we saw him. He didnt like it to much
    Haha, any reason?


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