Page 126 - Singiresu S. Rao-Mechanical Vibrations in SI Units, Global Edition-Pearson (2017)
P. 126
problems 123
x 0
d 2 d 3 d 3 d 4
k 3 m k 4
k 1 k 2
FiGure 1.75 Mass connected by springs.
k 2
l
mg
l
2
k 1 l
4
O
FiGure 1.76 Rigid bar connected by
springs.
1.21 Figure 1.77 shows a U-tube manometer open at both ends and containing a column of liquid
mercury of length l and specific weight g. Considering a small displacement x of the manom-
eter meniscus from its equilibrium position (or datum), determine the equivalent spring
constant associated with the restoring force.
Area, A
x
Datum
x
FiGure 1.77 U-tube
manometer.
