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Quantitative Analysis of the Physics in Hollywood Movies

Quantitative Analysis of the Physics in Hollywood Movies. Dan Burns Los Gatos High School NCNAAPT November 16, 2013 Carondelet High School Concord, CA. What was the a verage f orce exerted by Superman on Lois Lane while catching her?. Insert Superman Clip Here.

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Quantitative Analysis of the Physics in Hollywood Movies

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  1. Quantitative Analysis of the Physics in Hollywood Movies Dan Burns Los Gatos High School NCNAAPT November 16, 2013 Carondelet High School Concord, CA

  2. What was the average force exerted by Superman on Lois Lane while catching her? Insert Superman Clip Here

  3. What was the average force exerted by Superman on Lois Lane while catching her? tstop = 36f/(30f/s) = 1.2 s tfall = 137f/(30f/s) = 4.6 s vfall = (9.8)(4.6) = 45 m/s This is about 27 stories Assume Lois Lane’s m = 50 kg This is 5x the weight of Lois, should be survivable Favetstop = Δmv Fave= (50 x 45)/1.2 = 1875 N Total Force = 1875 + mg = 2365 N

  4. What was the Average Force exerted by Neo on Trinity while catching her? Insert Matrix Clip Here

  5. What was the Average Force exerted by Neo on Trinity while catching her? tstop = 1f/(30f/s) = 0.033 s Harder to get tfall because of slow-mo, about 27 stories Assume Trinity falls same distance and has same mass This is 140x the weight of Trinity, not survivable vfall = 45 m/s m = 50 kg Favetstop = Δmv Fave= (50 x 45)/0.033 = 68,182 N Total Force = 68,182 + mg = 68672 N

  6. Suggestions for Classroom Use • Show both clips and ask students to compare • Let students develop questions about clip(s) • Have them list what information they need to answer questions • Extract information together or let them do it for themselves • Ask multiple choice conceptual questions about clip • Use clip to create an example problem, the clip will increase their engagement • Video analysis is difficult because of extra frames added, clips need to have “reverse telecine” processing to remove extra frames

  7. What happens when you pour molten lead on an alien? Insert Alien Clip Here

  8. Pour 5000 kg of lead at 400 Co onto a 600 kg alien at 20 Co. What is the final temperature of the lead/alien mixture?

  9. How much of the 5000 kilograms of lead froze?

  10. What happens when you pour cold water on a hot alien? • Its volume will increase proportional to the change in temperature. • Its volume will decrease proportional to the change in temperature. • Its volume will increase proportional to the volume of the alien. • Its volume will not change. • It will explode.

  11. Insert Alien Clip Here

  12. What happens when you pour cold water on a hot alien? • Its volume will increase proportional to the change in temperature. • Its volume will decrease proportional to the change in temperature. • Its volume will increase proportional to the volume of the alien. • Its volume will not change. • It will explode.

  13. Could a human survive this? Insert 2001 Egress Clip Here

  14. Assume the spacehip had a volume of 4 m3, pressure of 1 atm, and a temperature of 16 Co. Assume the airlock has a volume of 12 m3, the process is adiabatic, and none of the air is lost to space. How many moles of air were in the spaceship? What is the airlock pressure if process was isothermal? Could this adiabatic process be isothermal?

  15. Complete the PV diagram for Dave’s Airlock Entry 0.8 0.5 0.4 0.33 Why do you think Dave closed his eyes before going? Could Dave survive this experience? Probably, see: http://www.uh.edu/engines/epi2691.htm

  16. Insert Christmas Vacation Clip Here

  17. 344 - 084 = 260 kWhr51 f/(30s/f) = 1.7sat $0.10/kWhr for 12 Hours$ = (energy/time) x time x $/energy$ = (260 kWhr/1.7s) x 12hr x 3600s/hr x 0.1$/kWhr = $660,706 ! 084 344

  18. Artificial Gravity For Earth Gravity: r = 100m ω = ? N

  19. 2001: A Space Odyssey What is artificial gravity level on the Space Station? Insert 2001 Space Station Clip Here

  20. 2001: A Space Odyssey What is the artificial gravity level on the Space Station? Height of Window = 1.2m Radius = 50 Window Heights = 60m Rotation Period = 32s (Average of 3) ω = 2π/Τ = 0.2 rad/s Acceleration = ω2r = 2.3 m/s2 Acceleration less than Mars, greater than Moon. It may be sufficient to counter effects of normalforcelessness

  21. Mission to Mars What is artificial gravity level on Mission to Mars Movie spacecraft? Insert Mission to Mars Clip Here

  22. Mission to Mars What is artificial gravity level on the ship? Height of Astronaut = 1.8 m Radius = 2.5 Astronauts = 4.5 m Time for 3/8 of a Rotation = 10.9 s Time for 1 Rotation (Τ) = 29 s ω = 2π/Τ = 0.22 rad/s Acceleration (Feet) = ω2r = 0.22 m/s2 Acceleration (Head) = ω2r = 0.13 m/s2 r ω Acceleration is too small to help astronauts, difference could produce nausea

  23. Goldeneye Bungee Jump-Could Bond hold on? Insert Goldeneye Clip Here http://youtu.be/zJ6Hy4ISq6I

  24. Could BondHold On? Bungee cords stretch 3-4x their length, assume 4x mB = 100 kg L – length of bungee L = 220/4 = 55 m, x = 220 – 55 =165 m Find k, force constant of bungee Find T, force from Bond’s hand FBD of Bond: 220 m x – bungee stretch distance + F= kx T mg Low, but Q could make one! Conclusion: Yes, but would that little hook hold?

  25. Insert A Christmas Story Clip Here

  26. Which of the following statements about the kid stuck to the metal flagpole are true? • I. More heat is transferred from the saliva to the pole than from the tongue to the saliva. • II. The temperature of the pole must be less than the freezing temperature of saliva. • III. The same thing would happen with a wooden pole. • I only. • II only. • I and II only. • I and III only. • I, II, and III.

  27. Insert Simpson’s Second Law of thermo Clip Here

  28. Which of the following statements are true about the Laws of Thermodynamics? • I. The change in internal energy of a gas is equal to the heat added plus the work done by the gas. • II. For a heat engine, Qh must be greater than the W. • III. The efficiency of a heat engine must be equal to or greater or than: • I only. • II only. • III only. • I and II only. • Iand III only.

  29. How I make clips from DVDs • I use a Mac, there are ways to do this with a PC • Use Handbrake to create digital file from DVDs • Use iMovie to edit file and create clip file • Use Handbrake to convert from .mov to .mp4 • Insert as a movie into Powerpoint or just play using Quicktime or VLC • Create stills using screen capture and annotate them with drawing software http://handbrake.fr/ http://www.videolan.org/vlc/index.html

  30. For many more Simpsons clips, search “Science on the Simpsons” or visit: http://www.lghs.net/ourpages/users/dburns/ScienceOnSimpsons/Clips.html

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