Środek ciężkości bryły.pdf

(96 KB) Pobierz
Microsoft Word - 0604.doc
3U]\NáDG URGHNFL*NRFLEU\á\
=QDOH ( üURGHNFL*NRFLRVWURVáXSDIRUHPQHJRRSRGVWDZLHNZDGUDWXRZ\PLDUDFKMDNQD
U\VXQNXSRQL*HM
Rysunek 1
URGHNFL*NRFLEU\á\PR*QDREOLF]DüSRSUDZLDMFZ]RU\]]DGDQLD3RQL*HM
przestawiono Z]RU\GRREOLF]HURGNDFL*NRFLSRXZ]JOGQLHQLXWU]HFLHMZVSyáU]GQHM
RUD]]DPLHQLDMFSROHILJXU\$QDREMWRüEU\á\9
3RáR*HQLHURGNDFL*NRFLEU\á\RNUHODVLQDSRGVWDZLHZ]RUyZ
6
6
6
(1)
=
\]
=
[]
=
[\
,
[
\
]
F
F
F
9
9
9
JG]LHVWDW\F]QHPRPHQW\EH]ZáDGQRFLLSROHRNUHORQHVZ]RUDPL
6 [G9 6 \G9 6 ]G9 9 G9
\]
ò
[]
=
ò
[\
=
ò
=
ò
.
(2)
9
9
9
9
'ODEU\á\VNáDGDMFHMVL]EU\áGODNWyU\FK]QDQHMHVWSRáR*HQLHURGNyZFL*NRFLVWDW\F]QH
PRPHQW\EH]ZáDGQRFLPR*QDRNUHODüQDSRGVWDZLHZ]RUyZ
Q
Q
Q
å
å
å
6 9[ 6 9\ 6 9]
\] L &
L
=
[] L &
L
=
[\ L &
L
=
(3)
=
=
=
gdzie V i , x Ci , y Ci oraz z Ci R]QDF]DMREMWRüLRGSRZLHGQLZVSyáU]GQURGNDFL*NRFLLWHM
EU\á\VNáDGRZHMZSU]\MW\PXNáDG]LHRVL
'ODEU\á\]U\VXQNXURGHNFL*NRFLOH*HüEG]LHQDRVLSLRQRZHMRVWURVáXSD:SU]\SDGNX
z c 3U]\URVWREMWRFL
G9RNUHOLP\MDNRREMWRüSURVWRSDGáRFLDQXSRáR*RQHJRQDZ\VRNRFL]RZ\VRNRFL
dz i
SRGVWDZLHNZDGUDWXRERNXE3RZ\*V]H]DáR*HQLDSU]HGVWDZLRQRQDU\VXQNX
=
XV\WXRZDQLDXNáDGXRVLZVSyáU]GQ\FKWDNDE\R]XNáDGXSRNU\ZDáDVL]RVLV\PHWULL
EU\á\]QDOH(üZ\VWDUF]\W\ONRZVSyáU]GQSLRQRZURGNDFL*NRFL
89767291.008.png 89767291.009.png 89767291.010.png
Rysunek 2
:LHONRüESROLF]\P\]WZLHUG]HQLD
Talesa w stosunku do boku podstawy a.
D
=
E
(
-
)
+
+ ]
=
D
(
-
)
E
+ ]
+
3U]\URVWREMWRFL
dV wynosi:
=
=
é
ê
D
(
-
)
ù
ú
G9 EG]
+ ] G]
+
Moment statyczny do policzenia z c PD]DWHPZDUWRü
æ
ç
ö
÷ =
=
ò
=
ò
+
é
ê
D
(
-
)
ù
ú
=
ò
+
D
(
-
+
)
=
D
+] +] ]
-
+
6 ]G9 ]
+ ] G]
+] +] ] G]
9
+
+
+
=
D+
2EMWRüRVWURVáXSDSROLF]\P\WDN*H]DSRPRFFDáNL
æ
ç
ö
÷ =
=
ò
=
ò
+
é
ê
D
(
-
)
ù
ú
=
ò
+
D
(
-
+
)
=
D
-
+
]
9 G9
+ ] G]
+ +] ] G]
+] +]
D+
9
+
+
+
:VSyáU]GQDSLRQRZDURGNDFL*NRFLRVWURVáXSDZ\QRVL]DWHP
2
+
+
89767291.011.png 89767291.001.png 89767291.002.png 89767291.003.png
D+
]
F
=
=
+
D+
3ROLF]RQZVSyáU]GQ]QDMGXMHP\ZXNáDG]LHZVSyáU]GQ\FK
Rysunek 3
3
89767291.004.png 89767291.005.png 89767291.006.png 89767291.007.png

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin