Weather & Global Climate Lab Practical on Coriolis and Sports
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School
Arizona State University *
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Course
111
Subject
Aerospace Engineering
Date
Feb 20, 2024
Type
Pages
6
Uploaded by PresidentUniverse10621
Unit 5 Weather & Global Climate: Lab Practical on
Coriolis and Sports (3 points) Due
No due date
Points
3
Questions
3
Time Limit
None
Instructions
Attempt History
Attempt
Time
Score
LATEST
Attempt 1 (https://asu.instructure.com/courses/172892/quizzes/1298392/history?
version=1)
4
minutes
3 out of
3
Score for this quiz: 3
out of 3
Submitted Jan 20 at 2:28pm
This attempt took 4 minutes.
This lab practical is based on the GPH 111 lecture on Air Pressure and Winds. The material covered in
that lecture is also explained in the online textbook readings (
Pressure & Winds
(https://asu.instructure.com/courses/172892/files/77690552/download?wrap=1) (https://asu.instructure.com/courses/172892/files/77690552/download?download_frd=1) )
You will be asked to answer multiple choice questions about Earth's air pressure and how winds flow in
response to differences in air pressure.
1 / 1 pts
Question 1
Just like the example given above, we will analyze a football kick.
The Scenario:
The Wildcats are down by two points to the Sun Devils
with one second left in the game. The kicker lines up for a 50-yard field
goal attempt to win the game. He is kicking the ball straight north. The ball
is kicked, and it is heading straight for the left goal post. All that is needed
for the Wildcats to win the game is for the ball to deflect 1/4 inch to the
right and the field goal will be good. There is no wind and no spin on the
ball, so the only hope is for the Coriolis Effect to cause the desired
deflection. Given this scenario, how much does the ball move in flight and
in what direction as a result of the Coriolis Effect? You have the following
information to help you solve this problem.
The kick is traveling straight north from 50 yards away (45.72m).
The kick is occurring at Arizona Stadium in Tucson, Arizona (Latitude
~32N, Longitude ~110W)
The speed of the kick (V) = 34 mph (15.23m/s)
The time of flight for the kick (t) = 3 seconds
The angular of velocity of Earth is (Ω) = 7.2921159 X 10^-5/seconds
φ is latitude. North is positive, south is negative.
The formula for the amount of deflection caused by the Coriolis Effect is =
2Ωsin(φ)Vt /2
2
0.22 inches to the left
0.33 inches to the left
0.33 inches to the right
0.22 inches to the right
Correct!
Correct!
Correct!
Correct!
Deflection = 2(7.2921159 X 10^-5/seconds)sin(32)(15.23m/s)
(3s) /2
Deflection = 0.00529 meters
Convert to Inches
Deflection = 0.22 Inches
The deflection was 0.22 and to the right, but it was not 1/4 inch.
The Wildcats missed the field goal. The scenario is exactly the
same as the example above, but there was a change in latitude. As
you get closer to the equator, the influence of Coriolis Effect
becomes less. In this case, it was enough to cost the Wildcats the
game.
2
1 / 1 pts
Question 2
For this question, we will analyze a golf shot in Tierra Del Fuego,
Argentina. ~(54S 68W)
The Scenario:
You are down by two strokes on the 18
green. The 18
green faces directly east and is 350 yards away. You hit the ball as hard
as you can, which is enough to make it the full 350 yards. You hit the ball
perfectly straight with zero spin (spin would affect the trajectory of the
ball). At first look, it appears you hit the ball so well you might make a
hole-in-one without the ball ever touching the ground. You rush over to the
hole to claim your glory and the match, but when you get to the hole you
notice that you missed. You think to yourself, “This must have been a
result of the Coriolis Effect!” How much of a deflection did the ball
experience as a result of the Coriolis Effect and in what direction did it
cause the deflection? Use the information below to help you.
The ball is traveling straight east to the hole 350 yards away (320.04m).
th
th
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The is occurring in Tierra Del Fuego, Argentina ~ (54S 68W)
The speed of the ball (V) = 150 mph (67.056m/s)
The time of flight for the ball (t) = 5.22 seconds
The angular of velocity of Earth is (Ω) = 7.2921159 X 10^-5/seconds
φ is latitude. North is positive, south is negative.
The formula for the amount of deflection caused by the Coriolis Effect is =
2Ωsin(φ)Vt
/2, there is a negative sign when looking at the Coriolis Effects
for objects moving east/west. For the purposes of this question, disregard
the sign of your answer.
2
2.23 inches to the left
4.25 inches to the right
2.23 inches to the right
4.25 inches to the left
Correct!
Correct!
Correct!
Correct!
Deflection = 2(7.2921159 X 10^-5)sin(-54)(67.056m/s)(5.22s)
/2
Deflection = 0.108 meters
Deflection = 4.25 inches to the left
This number is so big because it is occurring at such a high
latitude. Also, the deflection will be to the left because Tierra Del
Fuego is in the Southern Hemisphere.
2
1 / 1 pts
Question 3
For this question, we will analyze a baseball pitch.
The Scenario:
You are at a Baseball game in Pontianak, Indonesia. The
pitcher throws a 98 mph fastball, and it strikes the batter. The pitch did not
have any spin on the ball and there was no wind. The umpire decides to
eject the pitcher from the game. The pitcher, upset by the Umpire’s
decision, claims, “It’s not my fault; it was the Coriolis Effect that caused
my ball to curve into the batter." Calculate the influence the Coriolis Effect
had on the pitch to determine if the pitcher has a legitimate claim. Use the
information below to help you.
The ball was traveling straight south from a distance of 60 feet 6 inches (18.44 meters)
The pitch was traveling (V) = 98 mph (43.81 m/s)
The time of flight for the ball (t) = 0.42 seconds
This is occurring in Pontianak, Indonesia = (Latitude ~0, Longitude
~109E)
The angular of velocity of Earth is (Ω) = 7.2921159 X 10^-5/seconds
φ is latitude. North is positive, south is negative.
The formula for the amount of deflection caused by the Coriolis Effect is =
2Ωsin(φ)Vt /2
2
There was no deflec±on, therefore, the umpire was correct in throwing out
the pitcher.
Correct!
Correct!
Correct!
Correct!
3 inches to the left
0.1 inches to the left
0.002 inches to the right
Deflection = 2(7.2921159 X 10^-5)sin(0)(43.81m/s)(0.42s)
/2
Deflection = 0
The sin of a zero degree angle is zero, thus, there is not any
deflection caused by the Coriolis Effect. This is a way to show,
mathematically, that there is not any Coriolis Effect on the equator.
2
Quiz Score: 3
out of 3
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