Magnus effect - 2024 ACF Fall

Question

In YouTube videos by How Ridiculous, this effect makes balls travel further than if thrown by the human arm. For 10 points each:

[10h] Name this effect that causes an upward force on a spinning object. This effect is what causes a cricket ball to swing in the air.

ANSWER: Magnus effect

[10e] The Magnus effect occurs because this force acts on a spinning object. Airfoils produce this force, which opposes gravity and keeps airplanes up.

ANSWER: lift [or aerodynamic force]

[10m] This equation is used to calculate the lift on an airplane’s wings. This equation relates changes in pressure to height and fluid velocity.

ANSWER: Bernoulli’s equation [or Bernoulli’s principle]

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Summary


2024 ACF Fall at Cornell	fall	Y	9	16.67	100%	56%	11%
2024 ACF Fall at Ohio State	fall	Y	8	20.00	88%	63%	50%
2024 ACF Fall at Washington	fall	Y	6	20.00	100%	67%	33%
2024 ACF Fall at Georgia	fall	Y	11	20.91	91%	82%	36%
2024 ACF Fall at North Carolina	fall	Y	9	10.00	56%	44%	0%
2024 ACF Fall at Claremont Colleges	fall	Y	5	24.00	100%	100%	40%
2024 ACF Fall at Rutgers	fall	Y	8	23.75	88%	75%	75%
2024 ACF Fall at Illinois	fall	Y	9	26.67	100%	100%	67%

Data


Cornell E	Binghamton A	0	10	0	10
Binghamton B	Binghamton C	0	10	10	20
Cornell B	Cornell A	10	10	10	30
UCLA E	Claremont B	10	10	10	30
UCLA A	Claremont C	10	10	10	30
Claremont A	UCLA D	0	10	10	20
Chicago A	Illinois C	10	10	10	30
Purdue C	Illinois D	0	10	10	20
Cornell C	Cornell D	0	10	10	20
ESF	Cornell F	0	10	0	10
U of Rochester A	Penn State	0	10	0	10
Cornell G	RIT A	0	10	10	20
RIT B	Syracuse	0	10	10	20
U of Rochester B	RIT C	0	10	0	10
Jefferson County Scholars (DII)	Miami B (UG)	0	0	10	10
Michigan A (UG)	CWRU C (UG)	0	10	0	10
Michigan B (UG)	Michigan D (UG)	10	10	0	20
Michigan C	West Virginia A (UG)	10	10	10	30
Michigan State A	Miami C (DII)	0	10	10	20
West Virginia B (UG)	Ohio State A (UG)	10	10	0	20
Ohio State B (DII)	CWRU A (UG)	0	10	10	20
Appalachian State A	Liberty B	0	10	0	10
Appalachian State B	Liberty C	0	0	0	0
James Madison A	UNC A	0	0	0	0
NC State	James Madison B	0	0	0	0
VCU	Liberty A	0	10	10	20
Duke A	Tusculum	0	0	10	10
UNC B	Virginia	0	10	10	20
UNC C	UNC D	0	10	0	10
Virginia Tech A	William & Mary	0	10	10	20
Iowa A	WashU A	0	10	10	20
Illinois A	Notre Dame A	10	10	10	30
Northwestern B	Notre Dame B	10	10	10	30
Notre Dame C	Iowa B	0	10	10	20
Purdue A	SIUE	10	10	10	30
Northwestern A	Purdue B	10	10	10	30
Illinois B	WashU B	10	10	10	30
Miami A (UG)	Ohio State C (DII)	10	10	10	30
Alberta	UW Envy	0	10	10	20
UW Chastity	Arizona State A	10	10	10	30
UW Wrath	Arizona State B	10	10	0	20
UW Gluttony	UBC A	0	10	10	20
UW Greed	UBC B	0	10	0	10
UW Pride	UW Lust	0	10	10	20
Georgia Tech E	Auburn C	0	10	10	20
Clemson A	Furman	0	10	0	10
Auburn A	Emory A	0	10	10	20
Georgia Tech B	Georgia A	10	10	10	30
Mississippi State A	Georgia Tech A	0	10	0	10
Georgia Tech D	Southern	10	10	10	30
Tennessee A	South Carolina B	10	10	10	30
Tennessee A	South Carolina B	10	10	10	30
Tennessee A	South Carolina B	10	10	10	30
Tennessee A	South Carolina B	10	10	10	30
Tennessee A	South Carolina B	10	10	10	30
Tennessee A	South Carolina B	10	10	10	30
Tennessee A	South Carolina B	10	10	10	30
Tennessee A	South Carolina B	10	10	10	30
South Carolina A	Tennessee B	0	10	10	20
South Carolina A	Tennessee B	0	10	10	20
South Carolina A	Tennessee B	0	10	10	20
South Carolina A	Tennessee B	0	10	10	20
South Carolina A	Tennessee B	0	10	10	20
South Carolina A	Tennessee B	0	10	10	20
South Carolina A	Tennessee B	0	10	10	20
South Carolina A	Tennessee B	0	10	10	20
Alabama A	Vanderbilt B	0	0	10	10
UCLA C	UCSD	0	10	10	20
USC	UCLA B	0	10	10	20
Columbia B	Columbia J (DII)	0	10	10	20
Rutgers A (UG)	Fordham A	10	10	10	30
Maryland A (DII)	Penn B (DII)	10	10	10	30
NYU A (UG)	Penn A (DII)	10	10	0	20
Maryland B (DII)	NYU B	10	10	10	30
Princeton A (UG)	Lehigh A (UG)	10	10	10	30
Lehigh B (DII)	Rowan A (DII)	10	10	10	30
Bard A (UG)	Rutgers B	0	0	0	0