- What is the difference between Centre of gravity and Centre of buoyancy?
- How should you design a submerged body to ensure its stability?
- What is the importance of knowing metacentric height?
- What is Centre of buoyancy state its position for a floating body with respect to the Centre of gravity of the body?
- Which statement is correct for stable equilibrium for floating body?
- How stability of ship is calculated?
- What is GZ curve?
- What is meant by stability of a floating body?
- How does metacentric height affect stability?
- What do you mean by Centre of buoyancy?
- How Metacentre and metacentric height influence the stability of a floating body?
- What are the conditions of equilibrium of a floating body?
- What are the conditions of equilibrium of a floating body and a submerged body?
- What are the 3 types of buoyancy?
- What are the three types of stability?
- What would happen if the metacentric height is negative?
- Does the position of the Metacenter depend on the position of the center of gravity?

## What is the difference between Centre of gravity and Centre of buoyancy?

Center of Gravity is the point in a body where the gravitational force may be taken to act.

Center of Buoyancy is the center of the gravity of the volume of water which a body displaces..

## How should you design a submerged body to ensure its stability?

In order for a submerged body to be stable, the body′s center of gravity must lie below the center of buoyancy of the displaced liquid. In order for a submerged body to be in neutral equilibrium for all positions, the body’s centers of gravity and buoyancy must coincide.

## What is the importance of knowing metacentric height?

The vertical distance between G and M is referred to as the metacentric height. The relative positions of vertical centre of gravity G and the initial metacentre M are extremely important with regard to their effect on the ship’s stability.

## What is Centre of buoyancy state its position for a floating body with respect to the Centre of gravity of the body?

In case of a floating body, the centre of buoyancy is at the centre of gravity of the immered part of a floating body in the liquid, and lies vertically below the centre of gravity of the whole body. How satisfied are you with the answer?

## Which statement is correct for stable equilibrium for floating body?

A floating body is said to be in stable equilibrium if its metacentre lies above the center of gravity.

## How stability of ship is calculated?

The Righting Moment is the best measure of a ship’s overall stability. It describes the ship’s true tendency to resist inclination and return to equilibrium. The Righting Moment is equal to the ship s Righting Arm multiplied by the ship s displacement.

## What is GZ curve?

The easiest and handiest tool for analysing a surface ship’s stability, is by graphs or curves. … Since metacentric height is directly related to the righting lever (GZ) and angle of heel, the curve of static stability is a plot between the righting lever and angle of heel.

## What is meant by stability of a floating body?

A floating body is STABLE if, when it is displaced, it returns to equilibrium. A floating body is UNSTABLE if, when it is displaced, it moves to a new equilibrium. … For the untilted body the point G is the centre of gravity of the body where the body weight, W, acts.

## How does metacentric height affect stability?

It is calculated as the distance between the centre of gravity of a ship and its metacentre. A larger metacentric height implies greater initial stability against overturning. … Hence, a sufficiently, but not excessively, high metacentric height is considered ideal for passenger ships.

## What do you mean by Centre of buoyancy?

: the center of mass of the fluid displaced by a floating or submerged body (as a ship, submarine, or balloon) — see metacenter.

## How Metacentre and metacentric height influence the stability of a floating body?

If the metacentre is above the centre of gravity, buoyancy restores stability when the ship tilts. The stability increases with the distance between metacentre and centre of gravity, called the metacentric height. If the metacentre is below the centre of gravity, the boat is unstable, and a tilt results in capsizing.

## What are the conditions of equilibrium of a floating body?

→ The following are the conditions for equilibrium for a floating body : ↪The weight of the liquid displaced by the immersed part must be equal to the weight of the body . ↪The centre of gravity and the centre of buoyancy of the body should be along the same vertical line .

## What are the conditions of equilibrium of a floating body and a submerged body?

The equilibrium of floating or submerged bodies requires that the weight of the body acting through its centre of gravity has to be collinear with an equal buoyant force acting through the centre of buoyancy.

## What are the 3 types of buoyancy?

The three types of buoyancy are positive buoyancy, negative buoyancy, and neutral buoyancy.

## What are the three types of stability?

There are three types of equilibrium: stable, unstable, and neutral. Figures throughout this module illustrate various examples.

## What would happen if the metacentric height is negative?

If GM is negative, the ship will capsize when inclined. The ship’s roll period is directly related to the Metacentric Height of your vessel.

## Does the position of the Metacenter depend on the position of the center of gravity?

Because the angle of heel is small the two waterlines are assumed to intersect on the ship’s centreline. Figure 5.1. Small angle stability. The inclination does not affect the position of G, the ship’s centre of gravity, provided no weights are free to move.