
#1
Nov2613, 01:19 PM

P: 9

Is it possible to calculate the force caused by a bullet in a bone, knowing the velocity of the bullet when fired, its weight, and the bone's thickness?
If so, could you explain it a bit? I need to create a sort of exercise, so I wanted to do something involving a bullet and a body. Therefore, I could add some details/info if necessary... 



#2
Nov2613, 02:05 PM

Sci Advisor
Thanks
P: 2,944

Now the thickness of the bone gives you the distance traveled, the initial speed and assumption of constant deceleration gives you the average speed that distance is traversed, from that you get the time of passage and the deceleration. Now the mass of the bullet and ##F=ma## will see you home. No doubt the forensic pathologists have waaaay more sophisticated models.... But not necessarily the case that a more sophisticated and accurate model will produce any more insights. 



#3
Nov2613, 03:20 PM

P: 9

Thanks, but how can I calculate the acceleration?




#4
Nov2613, 03:49 PM

Sci Advisor
Thanks
P: 2,944

Force caused by a bullet in a boneIts average speed through that meter is 10 m/sec (average of 20 and 0, assuming constant deceleration) so it take .1 sec to cover that one meter. Because the speed goes from 20 m/sec to 0 m/sec in that .1 sec, so the deceleration is 200 m/sec^{2}. 



#5
Nov2613, 04:13 PM

P: 9

Oh thanks! I was making it more difficult than it actually is. I'll try to do all the calculations and then, I'll post them here. If u could take a look I would appreciate it ;)



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