Recent content by freexd

As braking distance I would take 1 millimeter for the deformation of the scalp and 1 millimeter for the deformation of the lamp. as falling acceleration we could take 10 m/s (falling acceleration) the time it took to stop is hard to estimate

Imagine a lamp tips over and hitst the top of the head. the lamp weighs about 300 gram and the distance when it started to tip over and hit the head was about 15 centimeters. in the moment of the impact the lamp has tipped over excactly for 90 degrees. The material is Metal that deforms only...

Hello, Imagine the following scenario: a person is lying in bed, straight on the back. A second person passes the bed and accidently hits the edge with it's knee. The created force results in a fast head movement of the person on the bed, towards the direction where the impact was. Is it...

I think my skull was not injured, so the rotational and translational forces matter. With the provided data, where they high enough for an injury?

Where do you have this info from? Imagine the bar to be 4m long, 10cm wide and high. It hit me almost with the edge in the area where the ear ends a bit above.

That looks so little. The bump was mediocre intense. Now think how hard you have to hit your head to get 20-60g. Why did you take 0.5mm? How high are the gs when we reduce this to 0.1mm?? The nfl does reasearch on head to head collisions. Most of thestart at twenty and go up to 50 and more.

Ah ok. You know certainly more like this users about physics. So what is a reasonable value for my incident yesterday? I know physicians don't like estimations

http://neurotalk.psychcentral.com/thread215450-4.html Drakkith look here please. They calculated much higher fores.

Yes I only hit a small part of my head(more the edge of this thing) So in summary we end up that it cannot be calculated. At least an assumtion?

0.27s is far too long. It was a rapid stop as metal give not much room. I would drop this number down to 0.1s About 50-60g would be requird for a concussion, 10-20g is a subconcuasive impact. I am sure it is around 20g

After rethinking this I would say youre right. I needed approximately 0.5 s for a 30cm distance. So my velovity was 0.6m/s. Now it should be doable? It os no problem when the calc is not 100% correct.

So the only thing that would be needed is how long I accelearated? I calculated 0.6s

No I wasnt in a car accident. I wanted to look through a window and pulled the curtains back(not to the side). I ve overseen this big metal bar attached on the wall and leand my body and head back until it collided. The impact was moderate hard. The velocity while hitting the object has to be 1...

This looks very interessting but way to complicated for me. I don't know how to do it

Hello, Could you guys please do me a favor and calc the g force of a 8.8lbs head that accelerates with 1m/s or 1.5m/s and than hits a solid metal objebt with the back of the head which moves 0.5 mm. This is no homework. It happened to me.