Fizix Is Phun Lab Day @ Great Escape

1. Fizix Is PhunLab Day @ Great Escape Hints and Other Useful Trivia

2. General Protocols • Must be in homeroom on time • We leave at __________ • no call-down • Gates open at 10:00 • Mandatory Check-In @ Lunch • 12:00 to 1:00 • Check-In at __________ • Bus leaves at _________

3. Pre Prior Planning… • Protractor Elevation Device • Make it • Practice with it • For each page • What data must be collected • How can it be collected • Who will collect it • Where possible • answer theory questions • prepare equations

4. Suggestions, etc. • Pre Prior Planning… • Gather all data first, then do calculations • I'm at the check-in for questions • Pack will be collected when the bus arrives back at the school • Lunch, Lockers • Items Due in class on _______ • pre-assignment • signed permission slip

5. Boomerang 1 • “Should” implies friction free • Consider KE  PE conversions • “Is” means in reality • time the car’s length passing the final point or • vf from v=d/t formula • Friction (Ff) causes lost acceleration

6. Boomerang 2 • free body diagram forces • weight • force due to motion (circular) • minimum speed causes vertical forces to be in balance at top of loop

7. Canyon Blaster • be sure to use the central loop • estimate distance via • distance between supports • # supports in circle • use vertical poles as reference

8. Canyon Blaster

9. Comet 1 • use protractor as a protractor • classical calculations • v=d/t • PE=mgh • Work Energy Theorem • W=Fd

10. Comet 2 • Think KE PE • "Should" means friction free • "Is" means actual • velocity: time how long it takes for the train to move its own length

11. Comet 3 • heed the assumption about lost energy • knowing KE yields v • FC and g-forces

12. Comet 4 • watch carefully • time train moving its own length before the brakes are applied • time how long the brakes are used

13. Steamin' Demon 1 • use protractor as a protractor • classical calculations • v=d/t • PE=mgh • Work Energy Theorem • W=Fd • Note: Demon1 or Comet1, not both

14. Steamin' Demon 2 • “Should” implies friction free • Consider KE  PE conversions • “Is” means in reality • time the car’s length passing the final point • vf from v=d/t formula • Friction (Ff) causes lost acceleration • Note: Demon2 or Boomerang1

15. Steamin' Demon 3 • free body diagram forces • weight • force due to motion (circular) • minimum speed causes vertical forces to be in balance at top of loop • Note: Demon3 or Boomerang2

16. Steamin' Demon 4 • 2 rides required • greatest force • in or out of seat • top of loop or bottom • greatest "rush"

17. Flying Trapeze 1 • Finding FC via balanced forces • the chain doesn't change length • rest length becomes hypotenuse • balance the forces • FT in chain • FC horizontal • mg vertical

18. Flying Trapeze 2 • Finding FC via circular • the chain doesn't change length • rest length becomes hypotenuse • find circumference / radius • find period of revolution

19. High Divers 1 • Comparing Processes • KE  PE energy conversions • classical (timed) free-fall • know R%E formula

20. High Divers 2 • Must do High Divers 1 • classic acceleration • grand scale approximation w/ unit conversion

21. The Merry-Go-Round • radius • via circumference – distance from outer edge • FC calculations • Ride twice for comparison • Work & Power

22. Pirate Ship • just a big pendulum • meaning of "weightless" • μ similar to Boomerang1

23. Water Tube Rides • need only do 1 of 4 • vf is the same for similar vertical drops regardless of path • for #5, I suggest v=d/t • μ similar to Boomerang1

24. Wave Pool • try to visualize a stop action picture • watch from one side, use partner as a marker • grand scale approximation • pool is not rectangular • length between depths by pacing sides • width by pacing thru water • volume of a trapezoid solid