DSpace university logo mark
Advanced Search
Japanese | English 

NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Liberal Arts > Bulletin > Bulletin of the Faculty of Liberal Arts, Nagasaki University. Natural science > Volume 28, No. 2 >

バットの違いによる打球の飛びの研究-木製バットと金属製バットの比較-


File Description SizeFormat
kyoyoS28_02_04_t.pdf644.16 kBAdobe PDFView/Open

Title: バットの違いによる打球の飛びの研究-木製バットと金属製バットの比較-
Other Titles: A study of ball velocity hitted by wooden bat and metal bat
Authors: 木村, 広
Authors (alternative): Kimura, Hiroshi
Issue Date: Jan-1988
Citation: 長崎大学教養部紀要. 自然科学篇. 1988, 28(2), p.185-193
Abstract: It's been reported that the post-impact velocity of ball hit by metal bat higher than that hit by wooden bat. The post-impact velocity of the ball is determined by the coefficient of restitution and pre-impact momentum of the bat. In this study, the coefficient of restitution of bat and ball and pre-impact momentum of the bat are measured. The results are foollows, 1) Coefficient of restitution of metal bat are slightly higher than that of wooden bat. And the range which the coefficient of restitution is relatively high is more wide in metal bat. 2) The pre-impact velocity of wooden bat is greater than that of metal bat. But momentum is slightly lesser. 3) The post-impact velocity of the ball was calculated using the laboratory data. The resuits are 48.3m/sec. in metal bat and 46.9m/sec. in wooden bat. These values are greater than Bryant's field test.
URI: http://hdl.handle.net/10069/16591
ISSN: 02871319
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 28, No. 2

Citable URI : http://hdl.handle.net/10069/16591

All items in NAOSITE are protected by copyright, with all rights reserved.

 

Valid XHTML 1.0! Copyright © 2006-2015 Nagasaki University Library - Feedback Powerd by DSpace