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Exploding Prairie Dogs.....
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<blockquote data-quote="Buffalobob" data-source="post: 80621" data-attributes="member: 8"><p>Torque is R X F</p><p>Angular momentum deals with momentum around an axis (at least topologically speaking, depending on the number of dimensions). </p><p></p><p>At some point I need to figure out how to do the little quote box /ubbthreads/images/graemlins/confused.gif</p><p></p><p></p><p>Yes and no. You are specifically correct but where you say "axis" I say "center of mass" My inertial frame refernce point is different from yours. And no I am not a total idiot - Just a partial idiot /ubbthreads/images/graemlins/grin.gif "shear" is "force" and force is "mass" times "acceleration". </p><p>"Acceleration" divided by "time" is "velocity". The simplication I made from "F =force" ( impulse) to momentum is acceptable if we are doing a COMPARISON and assume the time function of transfer (acceleration) is equivalent between a deer and a prairie dog we can divide time out of the function and be left with velocity time mass and are back to momentum-( we both know that a deer is about 10 times thicker than a prairie dog and the time of transfer of momentum will create a different "force" equation but my belief is that this is trvial in the scheme of the calculation).</p><p></p><p>You have indirectly answered a question that had bounced around in my head. If your bullet has a downward trajectory when it strikes the dog then how do you get a dog to have upward motion(fly through the air)- answer - by hittng the dirt in front of the dog and causeing dirt/ bullet to fly upward and "lift" the dog. So I guess if you want some dramatic videos of dogs flying through the air then you would want to riccochet the bullets into them.</p><p></p><p></p><p>If you want to have some fun with math with your new rifle, and beleive any of the stuff I have said then I have some really interesting stuff in my computer on conservation of momentum and shooting elk. This is left over from my very polite and courteous disagreement with John M. Too bad the man could not stick to science and had to get to name calling. </p><p></p><p>Any way I think the bottom line is that we agree a person will need a really thin jacket and big hollow point on the 105 howitzer bullet to move a deer.</p></blockquote><p></p>
[QUOTE="Buffalobob, post: 80621, member: 8"] Torque is R X F Angular momentum deals with momentum around an axis (at least topologically speaking, depending on the number of dimensions). At some point I need to figure out how to do the little quote box [img]/ubbthreads/images/graemlins/confused.gif[/img] Yes and no. You are specifically correct but where you say "axis" I say "center of mass" My inertial frame refernce point is different from yours. And no I am not a total idiot - Just a partial idiot [img]/ubbthreads/images/graemlins/grin.gif[/img] "shear" is "force" and force is "mass" times "acceleration". "Acceleration" divided by "time" is "velocity". The simplication I made from "F =force" ( impulse) to momentum is acceptable if we are doing a COMPARISON and assume the time function of transfer (acceleration) is equivalent between a deer and a prairie dog we can divide time out of the function and be left with velocity time mass and are back to momentum-( we both know that a deer is about 10 times thicker than a prairie dog and the time of transfer of momentum will create a different "force" equation but my belief is that this is trvial in the scheme of the calculation). You have indirectly answered a question that had bounced around in my head. If your bullet has a downward trajectory when it strikes the dog then how do you get a dog to have upward motion(fly through the air)- answer - by hittng the dirt in front of the dog and causeing dirt/ bullet to fly upward and "lift" the dog. So I guess if you want some dramatic videos of dogs flying through the air then you would want to riccochet the bullets into them. If you want to have some fun with math with your new rifle, and beleive any of the stuff I have said then I have some really interesting stuff in my computer on conservation of momentum and shooting elk. This is left over from my very polite and courteous disagreement with John M. Too bad the man could not stick to science and had to get to name calling. Any way I think the bottom line is that we agree a person will need a really thin jacket and big hollow point on the 105 howitzer bullet to move a deer. [/QUOTE]
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