arXiv Open Access 2020

When the quarter jumps into a cup (and when it does not)

Mateo Dutra Álvaro Suárez Martín Monteiro Arturo C. Marti

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Abstrak

While Bernoulli's equation is one of the most frequently mentioned topics in Physics literature and other means of dissemination, it is also one of the least understood. Oddly enough, in the wonderful book "Turning the world inside out" [1], Robert Ehrlich proposes a demonstration that consists of blowing a quarter dollar coin into a cup, incorrectly explained using Bernoulli's equation. In the present work, we have adapted the demonstration to show situations in which the coin jumps into the cup and others in which it does not, proving that the explanation based on Bernoulli's is flawed. Our demonstration is useful to tackle the common misconception, stemming from the incorrect use of Bernoulli's equation, that higher velocity invariably means lower pressure.

Topik & Kata Kunci

physics.pop-ph physics.ed-ph

Penulis (4)

Mateo Dutra

Álvaro Suárez

Martín Monteiro

Arturo C. Marti

Format Sitasi

APA MLA BibTeX

Dutra, M., Suárez, Á., Monteiro, M., Marti, A.C. (2020). When the quarter jumps into a cup (and when it does not). https://arxiv.org/abs/2010.13755

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Informasi Jurnal

Tahun Terbit: 2020
Bahasa: en
Sumber Database: arXiv
Akses: Open Access ✓