Universität zu Köln

Poeschel, Thorsten, Nasato, Daniel S., Parteli, Eric J. R., Gallas, Jason A. C. and Mueller, Patric (2019). Ping-pong ball cannon: Why do barrel and balls fly in the same direction? Am. J. Phys., 87 (4). S. 255 - 264. COLLEGE PK: AMER ASSN PHYSICS TEACHERS. ISSN 1943-2909

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Abstract

An impressive ping-pong ball cannon can be made by placing a bottle of liquid nitrogen at the bottom of a container and quickly covering it with, say, 1500 ping-pong balls. The liquid turns rapidly into a gas whose mounting pressure explodes the bottle, sending a swarm of balls upward out of the container. Surprisingly, the container also moves upward. This is a counterintuitive effect because the balance of forces, that is, Newton's third law does not seem to allow the container to move upwards. We explain the effect as a consequence of granular jamming in combination with Coulomb's friction law. (C) 2019 American Association of Physics Teachers.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Poeschel, Thorsten UNSPECIFIED UNSPECIFIED UNSPECIFIED Nasato, Daniel S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Parteli, Eric J. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gallas, Jason A. C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mueller, Patric UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-152868
DOI:	10.1119/1.5088805
Journal or Publication Title:	Am. J. Phys.
Volume:	87
Number:	4
Page Range:	S. 255 - 264
Date:	2019
Publisher:	AMER ASSN PHYSICS TEACHERS
Place of Publication:	COLLEGE PK
ISSN:	1943-2909
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MODEL; FLOW; COEFFICIENT; RESTITUTION; PARTICLES; DYNAMICS; PIPE Multiple languages Education, Scientific Disciplines; Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/15286