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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Help with a research article!
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<blockquote data-quote="PGJPJ" data-source="post: 1178608" data-attributes="member: 90674"><p>Hmmm, it's been a long time since college </p><p></p><p>But obviously there would be a drag force inside the barrel. Its modeled the same as what you are calling 'air' drag. It would just have a different coefficient of drag force. Also, inside the barrel would be the normal force, equal and opposite of the force of gravity (equal, because there is no acceleration in the Y-axis till the bullet leaves the barrel). There is an angular acceleration due to the spin of the bullet, so there would be a resultant force associated with that. but sorry, it's just been too long to remember how to model the effects of that force.</p><p></p><p> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite6" alt=":cool:" title="Cool :cool:" loading="lazy" data-shortname=":cool:" /> The most important thing to remember… there was this dude who sat under an apple tree. One day, an apple fell and hit him on the head, and that's when he figured out that <strong><em>the sum of the forces equals mass times acceleration.</em></strong> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p></blockquote><p></p>
[QUOTE="PGJPJ, post: 1178608, member: 90674"] Hmmm, it's been a long time since college But obviously there would be a drag force inside the barrel. Its modeled the same as what you are calling 'air' drag. It would just have a different coefficient of drag force. Also, inside the barrel would be the normal force, equal and opposite of the force of gravity (equal, because there is no acceleration in the Y-axis till the bullet leaves the barrel). There is an angular acceleration due to the spin of the bullet, so there would be a resultant force associated with that. but sorry, it's just been too long to remember how to model the effects of that force. :cool: The most important thing to remember… there was this dude who sat under an apple tree. One day, an apple fell and hit him on the head, and that's when he figured out that [B][I]the sum of the forces equals mass times acceleration.[/I][/B] :D [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
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