A cylindrical object of outer diameter 20 cm and mass 2 kg floats in water with its axis vertical.
Question:

A cylindrical object of outer diameter $20 \mathrm{~cm}$ and mass $2 \mathrm{~kg}$ floats in water with its axis vertical. If it is slightly depressed and then released, find the time period of the resulting simple harmonic motion of the object.

Solution: