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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Coriolis effect
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<blockquote data-quote="4mesh063" data-source="post: 29314" data-attributes="member: 941"><p>Refering to the Ohio St U Physics Dept there is an example that actually even refers to artillery projectiles in section 3.1. This explaination is contrary to Dave's. My guess on this conclusion, though it is not mentioned specifically, is that in addition to the eastward velocity component, there must also be an acceleration due to yaw during rotation of the origin. The yaw, independant of the eastward velocity (they always use east in the example) is going to produce a lateral velocity that, relatively speaking will increase as it nears the equator, reducing the effect of the southward shots "right hand" motion. Conversely, it also reduces the apparent eastward velocity when fired northward. </p><p></p><p>I guess another way to think of it is, those velocities would only be unaffected if you fired the shot dead verticle at which time the projectile would act like a geo-synchronous sattelite and fall right back on the shooter. It would continue to rotate at exactly the same speed as the earth, then gravity would set in and bring it straight back down to the same spot. (regardless of the latitude)</p></blockquote><p></p>
[QUOTE="4mesh063, post: 29314, member: 941"] Refering to the Ohio St U Physics Dept there is an example that actually even refers to artillery projectiles in section 3.1. This explaination is contrary to Dave's. My guess on this conclusion, though it is not mentioned specifically, is that in addition to the eastward velocity component, there must also be an acceleration due to yaw during rotation of the origin. The yaw, independant of the eastward velocity (they always use east in the example) is going to produce a lateral velocity that, relatively speaking will increase as it nears the equator, reducing the effect of the southward shots "right hand" motion. Conversely, it also reduces the apparent eastward velocity when fired northward. I guess another way to think of it is, those velocities would only be unaffected if you fired the shot dead verticle at which time the projectile would act like a geo-synchronous sattelite and fall right back on the shooter. It would continue to rotate at exactly the same speed as the earth, then gravity would set in and bring it straight back down to the same spot. (regardless of the latitude) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Coriolis effect
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