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PROBLEM 2.49
Two cables are tied together at C and are loaded as shown.
Knowing that P = 300 N, determine the tension in cables AC and
BC.
PROBLEM 2.50
Two cables are tied together at C and are loaded as shown.
Determine the range of values of P for which both cables remain
taut.
PROBLEM 2.51
Two forces P and Q are applied as shown to an aircraft
connection. Knowing that the connection is in equilibrium
and that
500P=
lb and
650Q=
lb, determine the
magnitudes of the forces exerted on the rods A and B.
PROBLEM 2.52
Two forces P and Q are applied as shown to an aircraft
connection. Knowing that the connection is in
equilibrium and that the magnitudes of the forces exerted
on rods A and B are
750
A
F=
lb and
400
B
F=
lb,
determine the magnitudes of P and Q.
PROBLEM 2.53
A welded connection is in equilibrium under the action of
the four forces shown. Knowing that
8
A
F=
kN and
16
B
F=
kN, determine the magnitudes of the other two
forces.
PROBLEM 2.54
A welded connection is in equilibrium under the action of the
four forces shown. Knowing that
5
A
F=
kN and
6
D
F=
kN,
determine the magnitudes of the other two forces.
PROBLEM 2.55
A sailor is being rescued using a boatswain’s chair
that is suspended from a pulley that can roll freely
on the support cable ACB and is pulled at a
constant speed by cable CD. Knowing that
α
= 30°
and
β
= 10° and that the combined weight of the
boatswain’s chair and the sailor is 200 lb,
determine the tension (a) in the support cable ACB,
(b) in the traction cable CD.
PROBLEM 2.56
A sailor is being rescued using a boatswain’s chair that is
suspended from a pulley that can roll freely on the support
cable ACB and is pulled at a constant speed by cable CD.
Knowing that α = 25° and
β
= 15° and that the tension in
cable CD is 20 lb, determine (a) the combined weight of
the boatswain’s chair and the sailor, (b) the tension in the
support cable ACB.
PROBLEM 2.57
For the cables of prob. 2.44, find the value of α for which the tension
is as small as possible (a) in cable bc, (b) in both cables
simultaneously. In each case determine the tension in each cable.
PROBLEM 2.58
For the cables of Problem 2.46, it is known that the maximum
allowable tension is 600 N in cable AC and 750 N in cable BC.
Determine (a) the maximum force P that can be applied at C,
(b) the corresponding value of
α
.
