- 4,231
- 2,255
So here's the thing. Through our current methods, breaking a 12x12x1 board (measured in inches) would sit at 17408.72534 joules (2359.737216 cm³ at 7.3774 j/cc for white oak), yet according to this, to do the same thing, you only need 500 newtons of force, which would equate to 375 joules for a 75-centimeter punch, to break the same board in half: https://daily.jstor.org/the-physics-of-karate/
Have we been using the wrong measurements this whole time thinking they were right? Or is there something we aren't fundamentally understanding about the concepts of strain, stress, and modulus?
Have we been using the wrong measurements this whole time thinking they were right? Or is there something we aren't fundamentally understanding about the concepts of strain, stress, and modulus?