Can we see dinosaurs someday? Part I

The word dinosaur comes from the Greek and means terrible lizard and this is the Amphicoelias Fragillimus that is believed to be the largest dinosaur and terrestrial animal ever to have existed, with 60 meters long and a mass of about 135 tons, however of this dinosaur, only the drawings of the notebook of who described it remain, since the bones have been lost and the studies were carried out in 1870, so the veracity of the information that is known about this giant is still doubtful, so the best candidate to hold the record is the Argentinosaurus Huinculensis , which could reach 40 meters long and weigh 60 tons, but there is a limit on the size of these animals, as well as in the limit of the size of the animals in general, yes, and this size is determined by physics, more specifically, by the pressure that these animals exert on their legs or legs Some cases also of the superiors.

The pressure can be calculated with a simple formula, dividing the force that comes from the weight of the animal between areas, from this formula we can deduce that if we want to increase the size and keep the pressure constant in order to avoid breaking the legs, we must increase the size of these, in small animals there is no problem, but in large animals the size of the feet and legs would end up being too big for it to move, besides that the bones could not support so much weight when running, that's why there are giant terrestrial animals on earth.

What the graph below shows, is the graphic representation of the weight-size relationship between some animals, as you see more or less on the same line, that is because animals have the relationship between femur and humerus, which is the form that you have to calculate the weight that can support an animal appropriate to its size, whales living in the water can support the approximate theoretical limit, the point at which an organism with these characteristics is unfeasible and the dinosaurs already brushed it, that is why the blue whale is currently the largest living being that has ever existed on this planet.

The famous tiranosaurus Rex, for example, which is far in size from the great dinosaurs, has been calculated that in order to run at 72 kilometers per hour the muscles of its legs had to represent 86 percent of all its muscular mass, this is something biologically unfeasible, in fact many traces of footsteps have been found, of these ferocious dinosaurs walking but until now none running, this prevents calculate their speed and on the other hand could indicate that in effect they were not able to run, so they are receiving I support the hypothesis that at most they reached 20 kilometers per hour, because you could easily escape them.