Oaks Park

The Rides - Measurements and Files:

Data and Video Site

Before Oaks Park | Oaks Park Makeup

Documents:
Oaks Park Lab | Peer Evaluation | Group Evaluation

What bus am I on?: Vladimir Putin .:. Xi Jinping .:. Kim Jong Un

Busses and Groups by period: Pd 1 .:. Pd 2 .:. Pd 5 .:. Pd 6 .:. Pd 8

Help with the Lab:

Vertical Circle Rides | Linear Acceleration Rides
Energy Rides | Wildcard Rides

Video Analysis Key | How to do Screenshots

Using the App "Graphical Analysis" and phyphox

Examples of Equations in Docs

Help with your Vertical Circle ride:

For your vertical circle ride, you are going to use Physics formulas to calculate the centripetal acceleration. The radii of the rides you can find on the Oaks Park Data site (Links at the top of this page). To find the periods for the rides that go in a circle, you can look at your accelerometer data and use cleverness. Once you have the centripetal acceleration, you will need to be able to compare that intelligently to the accelerometer data you collected.

Ferris Wheel/Rock-O-Plane/Zero-G:

Vertical Circle Overview:

1. Get your data from phyphox to Google Drive and put it in a new Google Sheet. Delete the irrelevant columns of acceleration. (For the Ferris Wheel and Rock-O-Plane you want to keep the y acceleration, and for the Zero G you want to keep the z acceleration - assuming you hold the phone the way it is in the diagram)

2. Graph Your Data <video>

3. Calculating your centripetal acceleration: (Ferris Wheel/Rock-O-Plane/Zero-G)

Find the period from your data using cleverness: <video>

Calculate the Centripetal Acceleration: <video>

4. Compare the phyphox data to the calculated accelerations. <video> <Video for ZeroG>

AtmosFEAR:

1. Get your data from phyphox to Google Drive and put it in a new Google Sheet. Delete the irrelevant columns of acceleration. If you held your phone with the face vertical, you want to keep the y acceleration, but if it was in your pocket with the face pointing upwards, it's the z acceleration that you want to keep. Keep whatever acceleration data was recording vertical acceleration.

2. Graph Your Data <video>

3. Calculate the tangential velocity of the spin. This is going to be 2(pi)r/T and we will have to figure that out once we get more information.

4. Use Video analysis to determine the velocity of the pendulum itself at the bottom of the ride <video>

5. Calculate the centripetal acceleration of the ride using v^2/r. The maximum v will be the pendulum speed plus the tangential velocity. <video>

6. Compare the calculated acceleration to the phyphox data.

Help with your Linear Acceleration ride:

For your linear acceleration ride, you are going to use the Video Analysis app to measure the acceleration of the ride. You then need to be able to intelligently compare the accelerometer data from phyphox to the calculated accelerations from Video Analysis.

Linear Acceleration Overview:

1. Get your data from phyphox to Google Drive and put it in a new Google Sheet. Delete the irrelevant columns of acceleration. If you held your phone as it is in the diagram with the screen vertical, you want the y acceleration for the Frog Hopper, Tree Top Drop, and Spider, and you want the x acceleration for the scrambler.

2. Do Video Analysis to find the acceleration of the ride. <Frog Hopper> <Tree Top Drop> <Spider> <Scrambler>

3. Compare the data from phyphox to the Video Analysis results. <video>

Help with your Energy ride:

For your Energy Ride, we are going to compare:

what we would calculate the velocity to be using conservation of energy, to
what it actually is.

For the calculations, we will need to know some heights. I have a good diagram of Adrenaline Peak below with estimated heights below. For the Big Pink, we know the height is 7.2 m. For the Zoom coaster, make some estimates of heights - that's good enough. You want to make at least 3 energy calculations.

To measure what the velocity actually is, you will need to record some good video snippets of the car or person zipping by with a distance reference. For Adrenaline Peak, we know the length of the car, for Zoom, we will try to get that same measurement. For the Big Pink, you will want to record some good video of people from the side slowing down at the bottom.

You don't have to ride the ride or measure the acceleration of the ride to do this. Adrenaline Peak is really the better ride to choose, in my opinion.

Energy Ride Overview:

1. Take several short videos of the car zipping by for at least three different elevations. On Adrenaline Peak, get a video of the top of the main drop, through the loop on the West side, and then one of the car going by on the South side (Parking lot) and of the car going by on the East side.

2. Use conservation of energy and the known heights of the ride to calculate what the velocity should be without any friction. <video>

3. Use Video Analysis to determine what the speed of the car (or person on the Big Pink) actually is. <Adrenaline Peak> <Big Pink Slide>

Yup - just say what they both are. Remember, our calculations do not take into account friction. Adrenaline Peak probably has a medium to small amount of friction, but the big pink slide has a ton of friction. Your predicted velocities will be nowhere near the actual velocities.