### Metacentre and Metacentric Height

The Metacentre may be defined as a point about which a floating body starts oscillating, when given a small angular displacement. It is denoted by M.

The metacentric height is the distance between the centre of gravity (G) of the floating body and the metacentre (M). Mathematically, metacentric height,

where

I = Moment of inertia of the sectional area of the floating body at the water surface.
V = Volume of the body submerged in water, and
BG = Distance between the centre of buoyancy (B) and the centre of gravity (G).

The conditions of equilibrium for a floating and submerged body are as follows :

The time of oscillation (T) of a floating body is given by

where

k = Radius of gyration of the floating body about its centre of gravity, and
h = Metacentric height of the floating body = GM

### Are Engineers Favourite Among Girls?

What do girls think about men who are engineers and what type of engineers are most favourite among girls? A survey was conducted by a team of aboutmech with members chosen from different countries. Each team member carried out a neutral survey in his/ her country to evaluate what females think about most of the engineers from different engineering branches. An overview of different questions asked in survey is given below: Question: Which male engineers do you find more attractive as a husband? Almost 50% women voted for mechanical engineers to be the most attractive husbands among other engineers. So mechanical engineers are most favourite among girls as a husband. They find them more trustworthy, intelligent, and creative. A married women from California said, “If your husband is a mechanical engineer, he will help you in everyday tasks. Because mechanical engineers are good team players and they have creative ideas about everything.” Which male engineers do you find more