Answered: frequency in horizontal motion is 0.4… | bartleby

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Assume that the first floor of such a
building is supported by a concrete
column as shown below, its natural
frequency in horizontal motion is 0.4
rad/sec. when a 69.8 kg large solid
tank (Mt) is clamped to the top of the
building, which is caused to decrease
the natural frequency to about 0.3
rad/sec.
Concrete
column
a) what is the mass of the building
(Mb) in kg

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