• huquad@lemmy.ml
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    18 days ago

    Bite pressure would be a more interesting comparison IMO. Of course a Trex is gonna have a massive bite force because it’s dominated by size.

    • P00ptart@lemmy.world
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      17 days ago

      It’s also got some trick jaws, it’s not 100% from size alone. Like dunkleosteus, which had a novel jaw that amplified the force.

      • huquad@lemmy.ml
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        17 days ago

        Fair enough, from my very limited research (Chicago museum has an exhibit about this exact thing), some animals use a 4-bar linkage to maximize force. I think Trex was among them.

  • isolatedscotch@discuss.tchncs.de
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    19 days ago

    Given:

    Bite Force of T. rex: 45,000 Newtons

    Jaw Closing Distance: Approximately 0.3 meters

    Energy=Force×Distance=45,000N×0.3m=13,500Joules

    Say we have a typical 10w led lightbulb, how much could it power it for?

    Time= Power/Energy=13,500J / 10W=1,350 seconds, or approximately 22 and a half minutes with a single T-Rex chomp, assuming 100% conversion efficiency

    • qjkxbmwvz@startrek.website
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      19 days ago

      Fun fact, the (rough) conversion efficiency of calories to mechanical joules in the human body (separate from the mechanical to electrical you’re referring to) is about 25% — but this is about the same factor as going from calories to joules! So, for a human to put out 13.5 kJ of energy would require about 13.5 food calories (kilocalories).

  • Ma10gan@slrpnk.net
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    19 days ago

    So Isaac Newton had only 1/700th the bite force of a normal human? Pathetic.

  • Potatisen@lemmy.world
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    19 days ago

    To break the largest human bone, the thigh bone, an estimated force of 4,000 newtons is needed. However, the amount of force required to break a bone depends on how the force is applied.

    -Random internet source

  • AAA@feddit.org
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    19 days ago

    Forgot the bite force of Russian trolls and Chinese paid actors on any topic remotely concerning Ukraine or Chinese politics, and how the west is actually the bad guys.

    Unlimited bite force.

    • PotatoesFall@discuss.tchncs.de
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      19 days ago

      We are omnivores and do a lot of chewing. Dogs don’t really chew, just rip.

      Some great apes that have more raw plants in their diet even have a bony ridge on their skull that the jaw muscles attach to.

      Our jaws actually have great leverage, our molars are very close to where the jaw muscle attaches.

    • Flocklesscrow@lemm.ee
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      19 days ago

      Not all dogs are the same, of course. Some dog breeds can bite harder than wolves. We selectively bred them for chomp strength.

  • dylanmorgan@slrpnk.net
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    19 days ago

    How is this calculated? Presumably you could directly measure all but the T-Rex and pliosaur, but how are those bits forces calculated?

    • MajorMajormajormajor@lemmy.ca
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      19 days ago

      I’m no BiteForceologist but I was assume they compare muscle size, muscle attachment points, and mechanical advantage of extant creatures and then apply that data to fossils. So not 100% accurate, but not just guessing randomly.

    • phdepressed@sh.itjust.works
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      19 days ago

      For the extant creatures you give them something they want to bite on and stick a measurement thing inside of that.

      For extinct creatures see other comment. You compare anatomy and do math.

  • grrgyle@slrpnk.net
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    19 days ago

    Every time I picture an alligator biting me I’m like I bet I could wiggle out or like somehow overcome it, because their jaws look so long and flat - like how much strength could they have? Certainly not more than a lion.

    Well.

    • Mothra@mander.xyz
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      19 days ago

      Just remember these guys can grip an animal the size of a horse with their jaws, overpower it, drag it to the water and rip it apart.

    • Che Banana@beehaw.org
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      19 days ago

      Salt water Crocs are not tiny. Some alligators are on the smallish side comparatively, but there are big gators out there too.

      • EldritchFeminity@lemmy.blahaj.zone
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        19 days ago

        Crocodiles are also one of those rare animals that don’t “age” in the traditional sense. Once they reach adulthood, they continue to get larger and larger until they eventually starve or their organs collapse under their own body weight. They don’t lose muscle mass or bone density or any of the usual issues we attribute to getting older.

        Imagine having the build of a 25 year old at 100 and being 7+ft tall. That’s how crocodiles age.

      • grrgyle@slrpnk.net
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        19 days ago

        Yeah I’ve never seen one in real life, so I feel like like I’m not grokking the sense of scale.

        Kind of like seeing a horse or moose for the first time (guess my hemisphere lol).

    • moonlight@fedia.io
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      19 days ago

      I bet this is peak force is measured at the base of the jaw, meaning the teeth at the tip would exert significantly lower force. So it might be possible to escape a small alligator, I’m not sure.

    • Zorsith@lemmy.blahaj.zone
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      19 days ago

      The closing force is significantly higher than its opening force IIRC. If you can close its mouth without getting bitten it’s screwed.