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2020:genesee_friction_activity_snippets [2020/02/12 07:10] wellerd |
2020:genesee_friction_activity_snippets [2020/02/12 07:31] wellerd |
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| Here is a link to the google doc where you can find more details on the activity: [[https://docs.google.com/document/d/1yGWHwJ3tRL8yq5J3BD2bIPrBk04dghvQxNl029No9xY/edit?usp=sharing | GISD Workday Activity]] | Here is a link to the google doc where you can find more details on the activity: [[https://docs.google.com/document/d/1yGWHwJ3tRL8yq5J3BD2bIPrBk04dghvQxNl029No9xY/edit?usp=sharing | GISD Workday Activity]] | ||
| - | Below we have provided some snippets of code you can use by copying into your own glowscript window, modifying the code, and running the program. Any line of code with a # in front of it is simply a comment (or an editor's note) that defines what the line will make the computer do. | + | Below we have provided some snippets of code you can use by copying into your own glowscript window, modifying the code, and running the program. Any code with a # in front of it is simply a comment (or an editor's note) that defines what the line will make the computer do. |
| ==== Objects ==== | ==== Objects ==== | ||
| Line 22: | Line 22: | ||
| v = vector(3,0,0) | v = vector(3,0,0) | ||
| - | #Define the time variables (initial time, time-step, final time) for the while loop | + | #Define the time variables (initial time, time-step, final time) |
| - | t = 0 | + | t = 0 |
| dt = 0.01 | dt = 0.01 | ||
| tf = 2 | tf = 2 | ||
| Line 33: | Line 33: | ||
| #While loop to iterate over time until we reach the final time | #While loop to iterate over time until we reach the final time | ||
| while t < tf: | while t < tf: | ||
| + | | ||
| #Rate keeps animation slow enough to view | #Rate keeps animation slow enough to view | ||
| - | rate(100) | + | rate(100) |
| + | |||
| #Position update step to predict location of box after a time-step dt base on v | #Position update step to predict location of box after a time-step dt base on v | ||
| MyBox.pos = MyBox.pos + v*dt | MyBox.pos = MyBox.pos + v*dt | ||
| Line 49: | Line 50: | ||
| <code> | <code> | ||
| - | #Define an acceleration vector | ||
| - | a = vector(1,0,0) | ||
| - | |||
| #While loop to iterate over time | #While loop to iterate over time | ||
| while t < tf: | while t < tf: | ||
| - | rate(100) #Keeps animation slow enough to view | + | |
| + | #Keeps animation slow enough to view | ||
| + | rate(100) | ||
| | | ||
| #Velocity update step to predict velocity of box after a time-step dt | #Velocity update step to predict velocity of box after a time-step dt | ||
| Line 62: | Line 62: | ||
| MyBox.pos = MyBox.pos + v*dt | MyBox.pos = MyBox.pos + v*dt | ||
| | | ||
| - | t = t + dt #Update the time to go on to the next time-step after the position update | + | #Update the time to go on to the next time-step after the position update |
| + | t = t + dt | ||
| </code> | </code> | ||
| Line 68: | Line 69: | ||
| ==== Graphing ==== | ==== Graphing ==== | ||
| - | Here is some code you can use to graph physical quantities in real-time with the animation, such as kinetic energy. | + | Here is some code you can use to graph physical quantities in real-time with the animation, such as position or kinetic energy. |
| <code> | <code> | ||
| Line 76: | Line 77: | ||
| #While loop to iterate over time | #While loop to iterate over time | ||
| while t < tf: | while t < tf: | ||
| - | rate(100) #Keeps animation slow enough to view | + | |
| + | #Keeps animation slow enough to view | ||
| + | rate(100) | ||
| | | ||
| #Position update step to predict location of box after a time-step dt | #Position update step to predict location of box after a time-step dt | ||
| Line 84: | Line 87: | ||
| PositionGraph.plot(t,MyBox.pos.x) | PositionGraph.plot(t,MyBox.pos.x) | ||
| | | ||
| - | t = t + dt #Update the time to go on to the next time-step after the position update | + | #Update the time to go on to the next time-step after the position update |
| + | t = t + dt | ||
| </code> | </code> | ||