‘‘Skydiver survives death plunge’’ (and the physics that helped)

Wagner, Glenn; Wood, R.

doi:10.1119/1.2344562

Cited by 3 publications

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“…The subject of air drag or air resistance has been used in undergraduate labs many times, both for spherical [1][2][3] and cylindrical 4-5 objects, and even for irregular shapes such as the human body. 6 All of these deal with falling bodies for which the only friction is due to the surrounding air. When one rides a bicycle, in addition to air drag, rolling friction also has to be taken into account.…”

Section: Air Dragmentioning

confidence: 99%

Bicycle Freewheeling with Air Drag as a Physics Experiment

Janssen

Janssens

2015

The Physics Teacher

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To familiarize first-year students with the important ingredients of a physics experiment, we offer them a project close to their daily life: measuring the effect of air resistance on a bicycle. Experiments are done with a bicycle freewheeling on a downhill slope. The data are compared with equations of motions corresponding to different models for the air resistance on a moving object. The relevant parameters are extracted from the data and the validity of the different models is be discussed. Finally findings are presented in a poster session.

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Section: Air Dragmentioning

confidence: 99%

Bicycle Freewheeling with Air Drag as a Physics Experiment

Janssen

Janssens

2015

The Physics Teacher

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Preconceptions in Mechanics

Camp

Clement²

2010

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This second edition of Charles Camp and John Clement's book contains a set of 24 innovative lessons and laboratories in mechanics for high school physics classrooms that was developed by a team of teachers and science education researchers. Research has shown that certain student preconceptions conflict with current physical theories and seem to resist change when using traditional instructional techniques. This book provides a set of lessons that are aimed specifically at these particularly troublesome areas: Normal Forces, Friction, Newton's Third Law, Relative Motion, Gravity, Inertia, and Tension. The lessons can be used to supplement any course that includes mechanics. Each unit contains detailed step by step lesson plans, homework and test problems, as_ well as background information on common student misconceptions, an overall integrated teaching strategy, and key aspects of the targeted core concepts. This edition has a number of substantial changes based on teacher input. A number of the lessons are adaptable for college level courses as well. Evaluations using pre-and post-tests have shown large gain differerfces over control groups.

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Measurement of air resistance on an air track

Andereck

1999

American Journal of Physics

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An extension of a standard air track experiment is described in which the effects of air resistance can be studied. A circular disk is placed on one end of an air track cart to provide air drag. The data analysis consists of subtracting the ''ideal'' velocity for a frictionless situation from the measured velocity and plotting the difference as a function of the ideal velocity. The resulting curve is fitted with a modified power-law and the coefficient of the cubic term is studied as a function of the area of the disk, a behavior that can be predicted theoretically. Frictional effects in addition to the air drag on the disk were found to be significant and were accounted for.

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‘‘Skydiver survives death plunge’’ (and the physics that helped)

Cited by 3 publications

References 0 publications

Bicycle Freewheeling with Air Drag as a Physics Experiment

Bicycle Freewheeling with Air Drag as a Physics Experiment

Preconceptions in Mechanics

Measurement of air resistance on an air track

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