Magnus effect is really applicable in ballistics to any degree in anything other than a hurricane crosswind.Has anyone mentioned the Magnus effect yet?
Not sure how fast your head would need to spin to keep you off the ground though.
Magnus effect is really applicable in ballistics to any degree in anything other than a hurricane crosswind.Has anyone mentioned the Magnus effect yet?
Not sure how fast your head would need to spin to keep you off the ground though.
Magnus effect is really applicable in ballistics to any degree in anything other than a hurricane crosswind.
not really wanting to get involved in this again, but it occurred to me that maybe you were looking at the wrong forces, - you were interested in speed, but maybe you should be looking at G force.
The brain sustains damage within the skull at impacts of 10G upwards - isn't that the important factor not how fast your head hits the ground ?
now we have established the speeds involved - just need some clever dicky to convert that to Gs -
heres a starter for 10.
1G = 9.812m/s/s , 1Newton = 9.812Kgm/s/s
any takers ?
Neil Armstrong lived a long and academically fulfilling life. If the rigors of test plane flying, ejections and the occasional Saturn V burn eventually did for his body then it was the heart that gave out first. This pattern seems to be reflected amongst his cohort. Whereas my childhood hero died from the progressive effects of frequent head impacts. He was a WBA striker. Indeed many of today's footballers appear to be a bit lacking in the brain department. Hmmm another sport we should be compelling helmet use? And don't get me onto professional boxing ...Since the G-force is just a function of speed of impact (highly variable) and time to decelerate (almost constant), the speed of impact is the most important consideration.
No it doesn't but it does affect the impact speed as that is a vector of the horizontal and vertical speeds.I think we established the horizontal speed doesn't effect the vertical speed
You'd hit the ground at 22.5mph at angle of 63 degrees from vertical. I've know idea where your getting '28g' from. 1 'G' is 9.81ms^-2, 28 'G' is 275.7ms^-2.of course your right, I only ignored it as I couldn't calculate it.
I am trying to find that initial point of impact - if we have two forces , the horizontal one (your forward speed) and a vertical one - (your fall). put together your travelling down a hypotenuse of a triangle. but they are independent.
so you cannot add them together but both are happening at the same time, would it be fair to say in that case you take the greater force - which would be the 20mph horizontal force ?
if that was so you would be looking at an impact of 28G. (12mph=16.8g, 1mph = 1.4g x20)