# Torque vs Moment- Difference [Explained with Pdf]

Torque vs moment can be differentiated as, the torque is the twisting or rotational force that causes angular acceleration in a rotating object, and the moment is the moment of a force about the specific point that has a tendency to rotate the object.

## What is torque?

Torque is the moment of force or rotational force that creates angular acceleration into the rotating object.

The torque is a vector quantity that is generally denoted by the symbol ‘𝜏’ or ‘T’.

In the SI system, the torque is measured in N.m and In the FPS system, it is measured in lb.ft.

Mathematically torque can be expressed as,

𝜏 = F x r

Where,
F = Force

Example:- Torque supplied to the ceiling fan or exhaust fan helps to rotate the blade of the fan.

## What is moment?

Moment of force is the ability of the linear force to rotate the object about a specific point. But in the case of the moment, the rotational movement of the object is restricted by the rigid support or by another equal and opposite moment.

The moment is generally denoted by the symbol ‘M’ and it is also a vector quantity.

It is generally given by the product of force and the perpendicular distance between the point of rotation and force.

∴ M = F x r

Where,
F = Force
r = Perpendicular distance between the force & point of rotation

The moment has SI unit of N.m and FPS unit of lb.ft.

Example: Load of the door creates a moment of force at the hinges of the door.

## Torque vs moment:

FAQ’s

1. How is torque related to moment?

The torque is the moment of force that can create angular acceleration into the object and the moment has a tendency to rotate the object but it does not rotate the object.

2. Is torque equal to moment of force?

The torque is known as the moment of force that is equal to the product of force and the perpendicular distance of force from the axis of rotation.