q q HA MB VA VB

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x
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= 0 . Przyjmuje ono
i
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- ql = 0 ⇒ HA = ql.
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roz-
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I
S2
S2
2
S1
q
ql
S1
ql
MB
VA
VB
x
∑M
Z równania
I
i2
= 0 PR*QD Z\]QDF]\ü QLH]QDQ\ PRPHQW UHDNF\MQ\ 0B (w punkcie 2
i
SU]HFLQDM VL
OLQLH G]LDáDQLD QLH]QDQHM UHDNFML 9B
i niewiadomych S1 i S2, co eliminuje je z
równania): ∑ M = 0 ⇒ -MB –ql l = 0 ⇒ MB = – ql.
I
i2
i
=QDMF 0B PR*HP\ WHUD] ] UyZQD
∑M
iA
=0 i
i
∑M
iB
= 0 REOLF]\ü UHDNFMH SLRQRZH
i
5yZQDQLDWHSU]\MPXMSRVWDü
VB 2l - MB+ ql l – ql l/2 = 0
-VA 2l + ql 3/2l + ql l – MB = 0,
co daje VB = – 3/4 ql i VA =7/4 ql
=HVWDZLHQLHREOLF]RQ\FKZLHONRFLSU]HGVWDZLDU\VXQHN
q
ql
ql
3/4 ql
7/4 ql
2
ql2