EXAMPLE 2.3 Determine the required length of cord AC in Fig. (a) so that the 8-kg lamp can be suspended in the position shown. The undeformed length of spring AB is I'A 0.4 m, and the spring has a stiffness of R=300 N/m. 2 m TẠC kAB = 300 N/m %3D 30 30 TAB W=78.5 N (b)
EXAMPLE 2.3 Determine the required length of cord AC in Fig. (a) so that the 8-kg lamp can be suspended in the position shown. The undeformed length of spring AB is I'A 0.4 m, and the spring has a stiffness of R=300 N/m. 2 m TẠC kAB = 300 N/m %3D 30 30 TAB W=78.5 N (b)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Engineering Mechanics-Statics-First Year- Civil Engineering
EXAMPLE 2.3
Determine the required length of cord AC in Fig. (a) so that the 8-kg
lamp can be suspended in the position shown. The undeformed length
of spring AB is I'A 0.4 m, and the spring has a stiffness of
R 300 N/m.
2 m
TẠC
kAB = 300 N/m
30
TAB
W = 78.5 N
(b)
(a)
SOLUTION
f the force in spring AB is known, the stretch of the spring can be
Dund using F = ks. From the problem geometry, it is then possible to
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