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*3-24" The spring-s on
the rope assembly are originally
unstretched when 0 : 0o. Determine the
tension ii each
rope when F : 9A tb. ldeglecr rhe size
of rhe prii"V, à, ¿
and Ð.
3-25.. The springs on the rope assembly
are originaily
stretched 1 ft when 0 : 0". Deiermine
the vertical fãrce tr
that must be applied so that 0
k
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30Lbßt
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x3-76" Ðetermine the force in each cable needed to
support the 500-1b load.
vertical
JArd AC
what is
ilibrium
.chment,
7C.
.t
'i"r.
The joint of a space fi'ame is subjectecl to four member
forces. Member ûAhes in the x-y plane and member OB lies
in the y-z plane. Determine the forces acting in each of the
members required for equilibrium of the joint.
3-77"
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þ54'
Determine the tension developed in cables
Aß and
AC and the force developed along strùt,4Ð for
equ'ibrium
of the 400-tb crate.
3-55. If the tension deveroped in each of the cables
cannot
exceed 300 lb, determine the largest
weight of the crate that
can be supported. Also, what is the force
developed along
strut,4Ð?
,-:
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,
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r,
j
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'r'3-56" Determine the force
...
e(
3.
c¡
rh
11,
..i.,t ,:...
in each cable
support the 3500-lb plarform. Set r/
_
Z ft.
needed to
3-57" Deterrnine the force in each cable needed
to
support the 3500-lb platform. Set r/ : 4 ft.
Z
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a 3500 th
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