CHALLENGER'S LOST LESSONS - ER - NASA

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76Questions to Answer:1. What was the ratio of the force divided by thedistance the car moved up the incline in the first experiment?How much work was accomplished in foot pounds in route tothe final elevation? How much work was done when the carwas lifted vertically to the same height about floor? Whatwas the ratio of the force needed to pull the car up the rampto the force needed to lift the car vertically to the sameelevation? What is the mechanical advantage of the inclinedplane?2. In the second experiment using a single pulley, howmuch force was required to lift the car three feet above thefloor? Repeat the lifting of the car pulling the cord in adifferent direction while recording the force required to liftthe car to the same height above the floor. Did the directionin which the cord was pulled make any difference when thecar was lifted a second time?3. When a second pulley was added to the apparatusshown for the second experiment, what was the forcerequired to lift the car three foot off the floor using the pair ofpulleys? How far did the rope have to be pulled to lift the carthree feet off the floor compared to the distance the rope hadto be pulled with a single pulley to lift the car three feet?What was the ratio of the forces between the single pulleylifting of the car and the double pulley lifting? What is themechanical advantage of the two pulley apparatus? What arethe two ways to calculate the mechanical advantage?4. After comparing the force needed to screw each ofthe two screws in the third experiment, think of a way that themechanical advantage of the screws might be calculated.Besides the threads being inclined planes surrounding eachscrew, what other simple machine is suggested which assistsin cutting into the wood fibers? How might friction bereduced so that less force is needed to turn the screwdriver?
77What Would Have Happened on Challenger?This question is best answered by actually performing theabove experiment. In the process, ask these questions:1. What added resistance exists on earth, not present for theChallenger demonstration?2. What danger/peril might one encounter performing theexperiment on Challenger not present on earth? Likewise,what danger/peril might one encounter performing theexperiment on earth which would not be a factor on boardChallenger?3. Do you believe Christa would have been successful indemonstrating the simple machines experiment as Mayfielddescribes? Why or why not?4. How would you suggest changing the proposedexperiment to assure a more likely successful outcome?Likewise, what might have been eliminated to assuresuccessful results?5. What about the filming of the demonstration? Would ithave been easier on Challenger or on earth?
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CHALLENGER’S LOST LESSONSProject
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15effervescent tablet, and a water
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19with an insert to provide frictio
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21Challenger’s Live Lost LessonsW
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Page 25 and 26: 25THE LOST HYDROPONICS CHAMBER LESS
Page 27 and 28: 27Hold down CTRL Key and click here
Page 29 and 30: 29i.e., the leaves may simply droop
Page 31 and 32: 31After each daily spraying of the
Page 33 and 34: 332. What impact would ambient ligh
Page 35 and 36: 35Christa Practicing Bar Magnet in
Page 37 and 38: 37Observe the movement of the right
Page 39 and 40: 39would permit filming. The movie w
Page 41 and 42: 41What Happened?(Study the video ta
Page 43 and 44: 43How do you believe Christa’s su
Page 45 and 46: 45the final lines of force pattern.
Page 47 and 48: 47permanent magnet.)The assembly of
Page 49 and 50: 49THE LOST NEWTON’S LAWS LESSON
Page 51 and 52: 51Such an experiment reminds educat
Page 53 and 54: 53equal for both projectiles. Cups
Page 55 and 56: 55Process:Cutaway view of spring re
Page 57 and 58: 57Questions to Answer:1. What did y
Page 59 and 60: 59THE LOST EFFERVESCENCE LESSONThe
Page 61 and 62: 61dioxide. The gas was contained in
Page 63 and 64: 63THE LOST CHROMATOGRAPHY LESSON“
Page 65 and 66: 65Hold down CTRL Key and click on:c
Page 67 and 68: 67of Christa to see how her apparat
Page 69 and 70: 69THE LOST SIMPLE MACHINES LESSONIn
Page 71 and 72: 71station actually has a trolley ty
Page 73 and 74: 733) A screwdriver and wood screws.
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Page 79 and 80: 79through” to view the set up for
Page 81 and 82: 81The “The Ultimate Field Trip”
Page 83 and 84: 834. If you were to teach the seven
Page 85 and 86: 85Unlike, the first live lesson whi
Page 87 and 88: 87Concerning the tripod, Pilot Mike
Page 89 and 90: 89A Classroom Version of Christa’
Page 91 and 92: 91easily done in the KC-135 aircraf
Page 93 and 94: 93and gaseous substances on earth a
Page 95 and 96: 95Wright Brothers’ AirplaneIntern
Page 97: 97Instructions for using the attach
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