Recent content by Sean Powell

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    Best fit MIN/MAX line through data.

    Best fit MIN/MAX line through data. Hello, I’m working with mechanical fatigue test data. Generally this data falls in a logarithmic curve relating load to number of fatigue cycles. This data tends to be somewhat erratic so there need to be a lot of samples at multiple different loads to...
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    Potential Energy of a compressed gas cylinder

    Hello Shooting Star. Thanks for the input. You are correct, while system transfers no heat to the surroundings there probably is a sudden increase in temperature. That was something I did not consider. In your link you submitted the following formula: **** Since the process is quick, we’ll...
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    Potential Energy of a compressed gas cylinder

    Hello, This is not a homework problem, but an engineering office problem. I’m looking to replace a steel compression spring with a gas cylinder. The spring is presently designed to absorb a known amount of kinetic energy which it ideally converts to potential energy (neglecting friction...
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    Formulas for acoustical dampening?

    Well some more extensive searching eventually led to this web page: http://www.ribaproductselector.com/Docs/5/22595/external/COL122595.pdf?ac= I'm posting it here in case someone uses a search engine on these posts so they don't come up dry. Thanks, Sean
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    Formulas for acoustical dampening?

    Formulas for acoustical dampening? Hello, A number of years back I worked at an engineering company where we needed to isolate very large, very loud motors from transmitting sound energy into the supporting structure. We did this with a series of elastic isolators that supported the motors...
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    Spacetravel: t as a function of a and d

    t as a function of a and d Sounds like a simple question and I'm bored at work so I'll take a shot at it. Assuming (falsely) that both start velocity and end velocity are zero (or zero relative to each other). A ship in transit will spend half of it’s time accelerating, a relatively small...
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    Jab or follow through on punch?

    Hello, I recently discovered this forum while searching for a force meter for measuring impulse from a punch. I also found the following article that people here might find interesting: From http://www.physicsclassroom.com/Class/momentum/U4L1c.html Fans of boxing frequently observe this...
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