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Thread: Math: If Train A leaves the station traveling...

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    Math: If Train A leaves the station traveling...

    I
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    Took to long to edit...stay tuned.
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    Quote Originally Posted by ptonsparky View Post
    Took to long to edit...stay tuned.
    We can have the answer Googled before you get the question posted, I'll bet!!
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    Quote Originally Posted by K8MHZ View Post
    We can have the answer Googled before you get the question posted, I'll bet!!
    Ready? Set? GO!
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    Raw Product Arrives at a set speed. Finished Product Leaves at a set speed. PA>PL

    PL has a 3 minute head start on PA. What is the formula for raw product level to reach the start/stop point again?
    Tom
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    I do know that at my current speeds PA & PL, there is about a nine minute difference.

    Yes, I know its Jr High or middle school math, but I'm in neither.
    Tom
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    Quote Originally Posted by ptonsparky View Post
    Raw Product Arrives at a set speed. Finished Product Leaves at a set speed. PA>PL

    PL has a 3 minute head start on PA. What is the formula for raw product level to reach the start/stop point again?
    I think there are too many details in the process that are left out to be able to answer.

    How do you get a three minute head start on leaving when you haven't been processed yet?

    Probably more a matter of asking the right question.
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    You wili probably ask for the name of conductor's sister!
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    Quote Originally Posted by kwired View Post
    I think there are too many details in the process that are left out to be able to answer.

    How do you get a three minute head start on leaving when you haven't been processed yet?

    Probably more a matter of asking the right question.
    If the product is binned, at t=0 it will take 3 minutes to fill the bin up from its current level to "full". Since PA>PL, at some point the bin will fill up, but it will be longer than 3 minutes, based on the difference between PA and PL and the size of the bin, which has a total volume VT and a starting volume V0.

    I have to think about this for a bit.

    (VT - V0)/PA = 3

    PA - PL = PN (net accumulation of product)

    (VT - V0)/PN = X (time to fill the bin with material flowing in and out)

    Since we aren't given VT or V0, rearrange the first equation to:

    (VT - V0) = 3PA

    or 3PA/(PA - PL) = X
    Last edited by gadfly56; 05-09-18 at 11:06 AM.

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