The breaking broomstick demonstration

Mamola, Karl C.; Pollock, J. T.

doi:10.1119/1.2343734

Cited by 4 publications

(2 citation statements)

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“…Since the movement is very fast, one is not able to observe it with the naked eye. However, using a high-speed camera easily allows us to study the process in slow motion (figure 3), revealing the physics behind it, which needs further explanation [6].…”

Section: Karate Demonstration: Translation and Rotation Of Rodsmentioning

confidence: 99%

Exploding balloons, deformed balls, strange reflections and breaking rods: slow motion analysis of selected hands-on experiments

Vollmer

Möllmann

2011

Phys. Educ.

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A selection of hands-on experiments from different fields of physics, which happen too fast for the eye or video cameras to properly observe and analyse the phenomena, is presented. They are recorded and analysed using modern high speed cameras. Two types of cameras were used: the first were rather inexpensive consumer products such as Casio Exilim cameras operating at frame rates of up to 1200 Hz for reduced image sizes and the second were higher quality research cameras, which allow much higher frame rates at larger image sizes. In this first article, examples are presented from exploding balloons demonstrating retardation in mechanics, karate hits, deformations associated with the bouncing of balls, strange trajectories of 'superballs' as well as the breaking of spaghetti. S Online supplementary data available from stacks.

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Section: Karate Demonstration: Translation and Rotation Of Rodsmentioning

confidence: 99%

Exploding balloons, deformed balls, strange reflections and breaking rods: slow motion analysis of selected hands-on experiments

Vollmer

Möllmann

2011

Phys. Educ.

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“…1 In this very old demonstration, a broomstick is supported at both ends by pins which rest on two wine glasses, as shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

Transverse bending waves and the breaking broomstick demonstration

Vandegrift

1997

American Journal of Physics

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Shear bands and cracking of metallic glass plates in bending J. Appl. Phys. 94, 904 (2003); 10.1063/1.1582555 Demonstrating and measuring the flexure of a masonry wall When a broomstick is supported at both ends by two wine glasses, a strong downward blow to the center will break the stick, leaving the wine glasses undisturbed, provided care is taken to cushion the wine glasses against an initial and brief downward motion of the ends of the broomstick. This downward motion is analyzed and estimated to be about 1 mm in magnitude. Qualitative experimental evidence of this motion is easily obtained using a force probe to monitor a light and nondestructive tap to a 2-m measuring stick. The method of analysis developed here leads to a simple derivation of the dispersion relation for transverse bending waves on a long rod.

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Zersplitterndes Holz auf rohen Eiern

Vollmer

Möllmann

2011

Physik in unserer Zeit

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Manch einer kennt die Show‐Darbietungen, bei denen ein Sportler mit bloßen Händen oder Füßen Mauersteine oder Holzplatten zertrümmert. Schon lange sind die physikalischen Hintergründe der Bruchmechanik und Dynamik bekannt, die diese scheinbar unmöglichen Kunststücke erlauben. Dennoch steht das Verständnis der physikalischen Bewegungsgesetze häufig im Gegensatz zu unserer Alltagserwartung.

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The breaking broomstick demonstration

Cited by 4 publications

References 0 publications

Exploding balloons, deformed balls, strange reflections and breaking rods: slow motion analysis of selected hands-on experiments

Exploding balloons, deformed balls, strange reflections and breaking rods: slow motion analysis of selected hands-on experiments

Transverse bending waves and the breaking broomstick demonstration

Zersplitterndes Holz auf rohen Eiern

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