Z me ( K ) = X
a
A B -
sin45° +
Rф
[ oB + |o Z )c o s4 5 °). (104.6)
(104.5) dan:
YA = G = mg = 30 ■
9,81 = 294,3 N .
(104.6) dan:
X A = < 7 ^ - s in 4 5 ° - - 1 - Я ф
( o B + JoZ>sin45°)
2 A B
AB
\
3
/
yoki son qiym atlarni q o ‘ysak,
X A = 58,109 N kelib chiqadi.
(104.4) dan:
X B = X A + Лф = 58,109 + 50,76 = 108,869 N .
E ndi pru jina reaksiyasini aniqlaym iz.
Buning uchun
OD steijen
harakatini tekshi-
ram iz,
D K p ru jin an in g sterjenga t a ’sirini
kuch bilan almashtiramiz.
О nuqtaga nisbatan
m om ent tenglam a-
sini tuzamiz (192-rasm):
►
________
I
Y, m
0
(Fv ) -
^
4
0
D
c o
s
4 5 ° +
