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PROBLEM 4.113 (Continued)
PROBLEM 4.114
The bent rod ABEF is supported by bearings at C and D and
by wire AH. Knowing that portion AB of the rod is 250 mm
long, determine (a) the tension in wire AH, (b) the reactions
at C and D. Assume that the bearing at D does not exert any
axial thrust.
PROBLEM 4.114 (Continued)
z
z
PROBLEM 4.115
The horizontal platform ABCD weighs 60 lb and supports a 240-lb
load at its center. The platform is normally held in position by
hinges at A and B and by braces CE and DE. If brace DE is
removed, determine the reactions at the hinges and the force
exerted by the remaining brace CE. The hinge at A does not exert
any axial thrust.
PROBLEM 4.115 (Continued)
PROBLEM 4.116
The lid of a roof scuttle weighs 75 lb. It is hinged at corners
A and B and maintained in the desired position by a rod CD
pivoted at C; a pin at end D of the rod fits into one of several
holes drilled in the edge of the lid. For the position shown,
determine (a) the magnitude of the force exerted by rod CD,
(b) the reactions at the hinges. Assume that the hinge at B
does not exert any axial thrust.
PROBLEM 4.116 (Continued)
PROBLEM 4.117
A 100-kg uniform rectangular plate is supported in the
position shown by hinges A and B and by cable DCE that
passes over a frictionless hook at C. Assuming that the
tension is the same in both parts of the cable, determine (a)
the tension in the cable, (b) the reactions at A and B.
Assume that the hinge at B does not exert any axial thrust.
PROBLEM 4.117 (Continued)
PROBLEM 4.118
Solve Problem 4.117, assuming that cable DCE is replaced
by a cable attached to Point E and hook C.
PROBLEM 4.117 A 100-kg uniform rectangular plate is
supported in the position shown by hinges A and B and by
cable DCE that passes over a frictionless hook at C.
Assuming that the tension is the same in both parts of the
cable, determine (a) the tension in the cable, (b) the
reactions at A and B. Assume that the hinge at B does not
exert any axial thrust.
