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Type: Posts; User: zeke

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  1. Replies
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    "I did break it up in to smaller rectangles and...

    "I did break it up in to smaller rectangles and did the calculation, but want to cross check it if there is a formula."

    I'm puzzled. Do you have the reference axis for the calculation. And how...
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    7,313

    Judging from the fundamental questions you are...

    Judging from the fundamental questions you are asking, you need a fundamental understanding
    of Newton's equations .
    You should either crack a book or get a tutor to give you that help...
  3. Thread: Arch Deflection

    by zeke
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    2
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    4,026

    This problem can be solved most proficiently by...

    This problem can be solved most proficiently by using energy methods. Unless you are unfamiliar with that approach, and depend on classical methods, you are in for a long calculation.

    If this is...
  4. Thread: Dave Pinkerton

    by zeke
    Replies
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    1,326

    Dave Pinkerton

    Has anybody heard from Dave lately?
  5. Replies
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    1,249

    Can't seem to open your files.

    Can't seem to open your files.
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    4,636

    I answered this a few days ago and apparently...

    I answered this a few days ago and apparently something went wrong with the transmission.

    To paraphrase, your understanding of power is incorrect.
    Power is NOT A^2/2.
    If A is voltage, Vsinwt ...
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    1,634

    Not the way you are doing it. For one thing, even...

    Not the way you are doing it. For one thing, even if you wrote the equations correctly, you have a mess to unravel the the constants .[BTW, your equations are written incorrectly. When you change...
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    From your posts: 1)"The average signal power...

    From your posts:
    1)"The average signal power coming in is A^2/2, and the average signal power coming out is 25*A^2/2"

    2).."believe in the case of a mechanical structure, the output force is 5...
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    Wrong, as the Q gets larger the amplitude and the...

    Wrong, as the Q gets larger the amplitude and the velocity get larger in the same proportion.
    What you need to do is write the ODE and solve it for the harmonic input. The input power is F*x', but...
  10. Thread: condensation

    by zeke
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    1,144

    1- colder than the saturation temperature of 38...

    1- colder than the saturation temperature of 38
    3- you mean condensing water and you would have to get a heat exchanger large enough to do it
    and use the coldest water available.
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    Explain exactly what the system is and where you...

    Explain exactly what the system is and where you get an output energy.
    Also in the system you describe , for example anLRC circuit,where w=wn, the current is in phase with the voltage.
    For the...
  12. Thread: 10x5 Challenge

    by zeke
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    1,693

    Well, did you solve it?

    Well, did you solve it?
  13. Thread: Oil Flow Rate

    by zeke
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    1,289

    You are too coddled. Why don't you spend a few...

    You are too coddled.
    Why don't you spend a few minutes to Google "flow of viscous fluid through an orifice"
    I'll bet you will get at least 10 promising hits.
  14. Thread: Oil Flow Rate

    by zeke
    Replies
    3
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    1,289

    Size of opening and distance between opening and...

    Size of opening and distance between opening and top of tank are needed
  15. Thread: 10x5 Challenge

    by zeke
    Replies
    6
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    1,693

    Ok, you twisted my arm TAN@=(5-COS@)/(10-SIN@)...

    Ok, you twisted my arm

    TAN@=(5-COS@)/(10-SIN@)

    I trust you can do the res
  16. Thread: 10x5 Challenge

    by zeke
    Replies
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    1,693

    Pretty simple problem, but we don't do homework...

    Pretty simple problem, but we don't do homework here.
    BTW, why would you need 6 place accuracy?
  17. Replies
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    "Ok, fair enough. But I'm showing that it would...

    "Ok, fair enough.
    But I'm showing that it would take well over 200,000 pounds of force to bend a schedule 40 pipe 3/4 of an inch over a span of 10 inches.

    (I=.3)

    Does that sound right?"

    ...
  18. Dumbdumb, This is not a job for an amateur. ...

    Dumbdumb,

    This is not a job for an amateur.

    Go get a professional to do this or you risk killing yourself or others.
  19. Replies
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    "Ok, fair enough. But I'm showing that it would...

    "Ok, fair enough.
    But I'm showing that it would take well over 200,000 pounds of force to bend a schedule 40 pipe 3/4 of an inch over a span of 10 inches."

    You were assuming elastic deformation...
  20. Replies
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    7,676

    "The load is a self-climbing chain motor, with a...

    "The load is a self-climbing chain motor, with a load attached under that.
    The chain motor capacity is nominally 1 ton (2000 pounds),
    with a brake capacity of (typically) 2-3 times that."

    The...
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    "The boss' design team says, "If you have a...

    "The boss' design team says, "If you have a 1/4-20 bolt, one revolution moves the nut .05 inches. If 44 lbs is applied at a radius of 1 inch (44 inch lbs), the force has to move 2 x pi inches or...
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    "On a recent theatrical show, during the...

    "On a recent theatrical show, during the "load-out",
    it was noted that a "beam" failed sometime during the show."

    Please describe the "failure"
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    "Mean" salaries are meaningless.

    "Mean" salaries are meaningless.
  24. The cam isn't a bad idea but you would need...

    The cam isn't a bad idea but you would need braking to hold a position and would be less precise than the linear solution proposed by the others.
  25. Replies
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    How is this not homework? small hint ..for...

    How is this not homework?

    small hint ..for prob1

    cos(x)dx=?

    small hint for problem 2
    Draw a right triangle and enter u and use trig functions
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