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Classical Physics
Mechanics
What units are used in spin factor and coefficient of lift formulas?
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[QUOTE="FGD, post: 6349478, member: 678654"] I am trying to add the magnus effect to a golf simulator program but am getting stuck on the coefficient of lift. What are the units I should be using in these calculations? The rest of my program I use SI units. But I seam to get weird results when using them with these equations. Spin factor = Angular Velocity * radius / velocity [ATTACH type="full"]263833[/ATTACH] Coefficient of lift = -0.05 + sqrt(0.0025 + 0.36 * radius * abs[angular velocity/velocity]) [ATTACH type="full"]263834[/ATTACH] I've seen angular velocity in rpm or rad/s or... I've seen velocity in mph or m/s or... I've seen radius in inches or meters or... The Coefficient of lift formula is taken from this [URL='http://www.ijimt.org/papers/419-D0260.pdf']paper[/URL]. The Spin factor from this [URL='https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiKyqGG7d7pAhXvJTQIHSuMBs4QFjAAegQIBBAC&url=https%3A%2F%2Fwww.mdpi.com%2F2504-3900%2F2%2F6%2F238%2Fpdf&usg=AOvVaw13OhhShGEQ25dm9SYdc8wW']paper[/URL]. If I get the proper units it should provide a graph with similar results to these. Left coefficient of lift, bottom spin factor. [ATTACH type="full" width="318px"]263832[/ATTACH] If you know of better research papers or source code, I would love a link. An example problem would also be very helpful. Thanks [/QUOTE]
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Physics
Classical Physics
Mechanics
What units are used in spin factor and coefficient of lift formulas?
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