Why do kids not need knee pads while crawling around on the floor?

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I’ve got the flexibility and energy to crawl around with kids, but I need knee pads when it’s hard wood or tile floors. I just feel the hard surface scrape against the bones of my knees/ankles. Kids don’t seem to notice a difference. What is different about their knees that allows them to enjoy any kind of floor?

In: Biology

10 Answers

Anonymous 0 Comments

It’s mostly about weight differences. The square cube law “When an object undergoes a proportional increase in size, its new surface area is proportional to the square of the multiplier and its new volume is proportional to the cube of the multiplier.”

What this means is that your weight goes up way faster than the surface area of your knees does which means you face more pressure per square inch of knee than a child would by a whole lot. 200lbs across 20 square inches of knee is a whole lot more pressure than 40 across 10

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