So, when Trix was out on a stroll, she walked at roughly the same speed as you do. From these, they derived the natural frequency and a prefered walking speed: 4.6 km/h (2.9 mph). They added digital muscles to the famous skeleton, and on this muscular model they could perform biomechanical analyses. To find out what that frequency is, Van Bijlert and his professors Anne Schulp (Naturalis/Utrecht University) and Knoek van Soest (VU) built a 3D model of Trix, the Tyrannosaurus rex on display at the Dutch National Museum of Natural History, Naturalis. Credit: Rick Stikkelorum, Arthur Ulmann and Pasha van Bijlert The tail is resonating, allowing for a more realistic, slightly slower gait. That means that like the swing, it has a natural frequency at which it resonates.Īn animation of T.rex Trix walking according to the simulations in Van Bijlert et al 2021. "A suspension bridge with a ton of muscle in it." Every step the tail swings up and down. "You could compare it with a suspension bridge," Van Bijlert explains. Like the bones in our necks, the bones in tails are held together by ligaments. These carnivorous dinosaurs didn't just have two legs, they also had an enormous tail that helped them move around. Pasha van Bijlert, student Human Movement Sciences at the Vrije Universiteit in Amsterdam (VU), applied the idea to an animal that walked differently from anything walking the earth right now: Tyrannosaurus rex. This works for animals that walk on four feet, and for two-legged animals like humans and ostriches. Walking slightly slower doesn't require less energy: you notice that it's actually harder. And when you're on a nice relaxing walk, the parts of your body resonate, too. In other words: you have to resonate with it. If you want to do it properly, you have to get the timing right, and swing in the rhythm of the swing. You already know how it works: when you are on a swing, you can't just swing at any speed. One of the ways to achieve this is using something called resonance. This is, in part, influenced by the amount of energy required: they prefer to walk at the speed at which they use the lowest possible amount of energy. Sorry if my grammar is a bit off, I'm tired and I'm going to stop typing now.Humans and animals have a preferred walking speed. They are just OP, if you are any large carnivore, you get picked off in less than 6 hits by something half the size of your head. The new dinosaurs are just so frustrating, especially if it's a special event one. Then came a tiny bird-like dino, and they killed the Giga in maybe 3 or 4 hits. Now if you want to play the game, you have to hide from everyone.įor example, I was just an Abrasive Giganotosaurus, and I was on the second stage. Then the updates were nice as well, there was more texture and everything. Sure, there were a couple of T-rexs' that came and tried to kill everyone, but it was nice. The world was mostly flat, and a lot of people stuck together and notified the others when they found food or the ponds. I remember the good days of DS, there were only a couple dinosaurs available, when you were an adult T-rex you were the apex predator.
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