Problem C20:
A block is floating in a fluid. The density of the fluid is
n_{1}. The density of the block is
n_{2}. The top of the block is
a distance h above the surface of the fluid as shown below.
The block is given a slight push downward and oscillates up and
down at the fluid's surface. What is the period T of oscillation
of the block? If T=n_{3}π
√h/g,
what is n_{3}? Note that n_{1} and n_{2}
have the same units of density. (The density of water
is 100 in these units.) n_{3} is unitless. g is the acceleration due to gravity.

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