>>13
ããããªã質åãããª
lïŒ ã³ã³ãããé·ã
rïŒ ã¯ã©ã³ã¯é·ã
ïŒ é£æ¡¿
ãããã
æ¯
l r
ïŒ ã³ã³ãããã®æ¯ãè§åºŠ
ïŒ äžæ»ç¹åºæºã®ã¯ã©ã³ã¯è§åºŠ
ãšããŸãïŒ
ã·ãªã³ãå
å§åããã¹ãã³ãæŒãåã¯ïŒ
F
c
D P
c
2
4
ãã ãïŒ
P
c
ïŒã·ãªã³ãå
å§å
DïŒãã¢
ãããã£ãŠïŒã³ã³ãããã®è»žæ¹åã«äœçšããåã¯
cos
4
2
c
c
D P
F
ãšãªããŸãïŒããã§ïŒ
rsin lsin
ãªã®ã§ïŒ
2
2
2
2
2 sin
cos 1 sin 1 sin 1
l
r
ãšãªããŸãïŒ
ïŒïŒåŸåŸ©éåéšåã®æ
£æ§åã«ããã¯ã©ã³ã¯ãã³è»žåã«äœçšããå
F
rec
èšç®ãç°¡åã«ããããïŒã³ã³ããããå°ç«¯éšïŒãã¹ãã³ãã³åŽïŒãšå€§ç«¯éšïŒã¯ã©ã³ã¯ã
ã³åŽïŒã«åãïŒå°ç«¯éšã¯ãã¹ãã³ãšãšãã«åŸåŸ©éåéšåã«å«ããŸãïŒåŸåŸ©éåéšåã«ã¯æ
£
æ§åãçºçããŸãïŒæ
£æ§åã®å€§ããã¯ïŒ
cos 2 cos 2 4 cos 4 6 cos6 8 8
cos8
2
6
2
4
2
2
2 2 F
rec mrec
r A A A A
ãšãªããŸãïŒãã ãïŒ
mrec
ïŒãã¹ãã³ãã³ã³ãããå°ç«¯éšãå«ãåŸåŸ©éåéšåå
šäœã®è³ªé