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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet rotation vs velocity
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<blockquote data-quote="MontanaRifleman" data-source="post: 220870" data-attributes="member: 11717"><p>The physics that control spinning would be basically the same as the physics that control the velocity of a bullet.</p><p> </p><p>An object in motion tends to stay in motion.</p><p> </p><p>A bullet shot space would never stop or slow down unless it met with amother object. Nor would it ever stop spinning.</p><p> </p><p>It takes force to put an object in motion, and it takes equal force to stop that motion. The explosion of the powder charge is the force that puts the bullet into motion, and the force that causes it to spin is the velocity of the bullet combined with the frictional force of the rifling.</p><p> </p><p>The force that causes the bullet to slow down is the friction it experiences from passing through air which is also the same force that slows the spinning down. Friction from air has a lot more effect on bullet velocity than bullet spin. </p><p> </p><p>If you fired a bullet straight up into the air it would still be spinning when the bullet finally stopped and started falling back to earth and still be spinning when it hit the earth. Try it with a football or baseball or whatever... toss it straight up with a spin and watch while it falls back to earth with almost the same rate of spin it had going up.</p><p> </p><p>That's basically it in a nutshell.</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 220870, member: 11717"] The physics that control spinning would be basically the same as the physics that control the velocity of a bullet. An object in motion tends to stay in motion. A bullet shot space would never stop or slow down unless it met with amother object. Nor would it ever stop spinning. It takes force to put an object in motion, and it takes equal force to stop that motion. The explosion of the powder charge is the force that puts the bullet into motion, and the force that causes it to spin is the velocity of the bullet combined with the frictional force of the rifling. The force that causes the bullet to slow down is the friction it experiences from passing through air which is also the same force that slows the spinning down. Friction from air has a lot more effect on bullet velocity than bullet spin. If you fired a bullet straight up into the air it would still be spinning when the bullet finally stopped and started falling back to earth and still be spinning when it hit the earth. Try it with a football or baseball or whatever... toss it straight up with a spin and watch while it falls back to earth with almost the same rate of spin it had going up. That's basically it in a nutshell. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Bullet rotation vs velocity
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