### Topic Content:

- Definition of Centre of Gravity
- Determine the Position of the Centre of Gravity of an Irregular Object
- Use of a Plumbline
- Using the Balancing Method

- Determining the Weight of an Object by the Principle of Moments

The Centre of gravity of a body is the point at which the total weight of a body appears to be concentrated.

or

The Centre of gravity of a body is the point at which the total weight of a body appears to pass through.

Centre of mass of a body is the point at which the total mass of a body appears to pass through or concentrated.

The Centre of gravity for objects varies as shown below.

For a Uniform rod, the centre of gravity is at the mid-point of the centre rule. | |

For a Uniform Circular Plate, the centre of gravity is at the mid-point of the circular plate. | |

For a Uniform Circular Ring, the centre of gravity is at the centre of the ring. | |

For a Uniform Rectangular Sheet, the centre of gravity is at the point of intersection of the diagonals. | |

For a Uniform Triangular Plate, the centre of gravity is at the point of intersection of the medians. |

### Determine the Position of the Centre of Gravity of an Irregular Object:

The centre of gravity of irregular-shaped objects can be determined by suspension with a plumb line from two or more points or by balancing the body on a knife-edge.

You are viewing an excerpt of this Topic. Subscribe Now to get **Full Access** to **ALL** this Subject's Topics and Quizzes for this Term!

Click on the button **"Subscribe Now"** below for Full Access!

### Subscribe Now

**Note:** If you have **Already Subscribed** and you are seeing this message, it means you are logged out. Please **Log In** using the **Login Button Below** to **Carry on Studying!
**

## Responses