• # question_answer The least radius of gyration of a ship is 9 m and the metacentric height is 750 mm. The time period of oscillation of the ship is: A) 42.41 s             B) 75.4 sC) 20.85 s             D) 85 s

The period of oscillation, $T=2\pi {{\left[ \frac{{{\left( Radius\text{ }of\text{ }gyration \right)}^{2}}}{metacentric\text{ }height\times g} \right]}^{1/2}}$ $=2\pi {{\left[ \frac{{{9}^{2}}}{0.75\times 0.81} \right]}^{1/2}}=20.85s$