How come, if we drop an ant from a very high place, it doesnt break legs or die?
But if we fall from a very high place, we’d break legs and probably die too….how come ants dont eventhough they’ve been dropped from twice as high a place than us?
The larger an object is, the heavier it gets as a function of its surface area.
Take a small cube of one unit length. Its surface is 6 unit square, and its volume is 1 unit cube.
Now, let’s take a cube that is 2 by 2 by 2. Its volume is 8. Each surface is 2 by 2, and there are 6 of them, so surface area is 24.
So, the small cube as a volume/surface ratio of 1/6, while the bigger one has 8/24, or 1/3.
The air resistance of a falling object is a function of its area, and the force of gravity that is overcoming said air resistance is a function of the mass, therefore of the volume (assuming similar density, which is about right for every living organism already).
So, an insect will survive the fall because it will never fall as fast as you.
Also, the resistance of a bone is a function of its cross section, again this is related to the surface area. But the weight it has to carry is a function of the mass. Therefore, smaller creature are proportionally stronger and less fragile than bigger ones. A strong human being can lift more that his own weight, and on two legs (and chimps are stringer still for about the same weight as humans). An ant can carry several times its own weight. But take an elephant, and it cannot carry a load as heavy as his body. Whales cannot even carry their own weight, that is why they need to remain in water.
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