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hafilax

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Posts posted by hafilax

  1. Ma blonde est de Québec. Nous allons voyager en France à quelque temp. Je voudrais visiter les montagnes des Pyrenées et des hauts Alps et peut-être Bretagne aussi. Je doute que nous grimperions.

    MINX

    hey kevtard...please find post of where i've stated a grade of a route i've climbed publicly...and pm's don't count...my son is another matter though as i am totally spraying about that...but hey, he's just a kid and frankly, he's killing it...

     

    have fun searchin'

     

    Spraying about your kid is just as narcissistic yet somehow acceptable.
  2. My friends with the worst climbing related injuries were roped.

     

    You have the same elements of control over the risk you take bouldering, soloing or roped climbing. The edges between them can blur. When does a high-ball become a solo? A bouldery start ends at the first clip/piece.

     

    With the exception of top-roping you are generally risking serious injury on some level and rely on your judgment and skill to save your ass.

  3. Let's define that 3t^2 value...

    Are we talking (3*t)^2 or 3(t^2)?

    It makes a difference, and algebraic hierarchy would say that it is 3(t^2).

    So I agree the result is the only the top half of your curve. Since t is never negative (according to rob's given values for t), you cannot have negative values of y.

    I forgot about the limits on t.
  4. OK I got one (not multi-variable calculus, but fun nevertheless): show from Newton's laws that the fall factor is length of rope divided by fall distance

     

    FF = l/d

     

    Be sure to include any assumptions you make (e.g. the rope behaves like an ideal spring where f = kx). Bonus points if you include a free body diagram.

    The fall factor comes from the fact that the spring coefficient of the rope is inversely proportional to the length of rope that's in use. I'll defer to Richard Goldstone for the rest of the proof:

    http://jt512.dyndns.org/StandardEqn.pdf

     

    Somebody should write an iPhone App version of

    http://jt512.dyndns.org/impactcalc.html

    for use on lead.

  5. I just need something portable that will run a spreadsheet, a PPT, or a word doc, and allow me to spray 24/7 from anywhere on earth. Seems like netbooks do all that in a cheap, small format.
    You're right, you should get a netbook.

     

    Look on CL. Lots of people are probably unloading them after getting a magical iPad. Cash in before they come to their senses.

  6. Red Bull isn't going to be out there micro-managing all of these projects but it doesn't matter if they're directly responsible or not. You want to punish the kid and the guides you go after their bankroll: Red Bull.

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