The short answer to everything is always F = ma. For the longer answer, read the article.
“If you know the enemy and know yourself, you need not fear the result of a hundred battles.” Maybe this quote from the Art of War might not be the most applicable excerpt, but regardless you could always stand to learn a bit.
Not too long ago I published the article “Accelerating the Wrist in a Cut – It Doesn’t Work!”. A few valid questions were raised, and they deserve answers.
Despite what you may want to believe, you CAN NOT have acceleration at the wrist and a locked structure at the moment of contact!
Learn about the exciting life cycle of cracks! From infant little microfractures to all grown up break-my-new-feder cracks.
Steel is a good choice for swords. But what is it in the first place?
What makes steel a good material for swords? There isn’t just one reason, steel just happens to be right in the middle of a bunch of desirable properties.
Stiffness of a training simulator is something that is often thrown around to help determine its safety. But what makes something that way?
What does it matter how a tatami falls down? When the fall is all that’s left, it matters a great deal.
A small collection of things too small to deserve their own article.