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Spockie-Tech
Site Admin
Joined: 31 May 2004
Posts: 3160
Location: Melbourne, Australia
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Well, I'm not hanging on my calculator for this thread, but the discussion of energy principles is always an interesting thing. given that our sport basically involves moving large chunks of it around in a violent way..
The deceleration thing is the key point I think.
As we well know (goverment warnings aside), speed doesnt kill at all. you can live you entire life at 800km/hr without a problem. its only when some inconsiderate bastartd goes and puts something - 1. slower then you and 2. heavy and/or solidly mounted in the way that it becomes a bit of a problem.
Then we enter the region of physics that has caused more deaths, splats, booms, squishes, ouches and other undesireable experimental phemonena. The point of deceleration (or "now what the heck am I gonna do with all this energy I've been carrying around in my pocket ?").
Speeding doesnt kill you at all.. but Stopping quite often does.
My original comment about using G to calculate the robots potential energy as it peaked in its hypothetical 3m ballistic arc was flippant, but interesting as the robot now has the same problem of an armoured bot about to meet a spinner... Theres a lot of energy about to come its way in a big rush. and how fast it can disperse that energy evenly, or where it can absorb it without damage will determine if it gets to walk away from this landing or not.
If our theoretical stunt-bot takes .1 of a second to decelerate from 7.67m/s to 0ms, then it will have travelled an further (~) 0.76meters from the moment of impact before coming to a halt. I hope its make of rubber, or else I think it just moved into the "splat" catgeory.
I would guess that any imapct that takes more than 1 millisecond (.001) or so to absorb/disperse is going to be trouble.
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Sun Jul 11, 2004 12:24 pm |
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