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Hydraulics - Engineering

Q1:

The radius of gyration of the water line of a floating ship is 4 m and its metacentric height is 72.5 cm. The period of oscillation of the ship, is

A π

B 2π

C 3π

D 4π

E π/2

ANS:C - 3π

Time period = 2Π (K^2/GM* g)^0.5.
T=2Π (4^2/0.725*9.81)^0.5,
T=2Π *(16/7.11)^0.5,
T=2Π *2.25^0.5,
T=2Π *1.5,
T=3Π -> ANS.