# How does mass affect angular acceleration?

##### 1 Answer

#### Answer:

Angular acceleration is inversely proportional to mass.

#### Explanation:

For rotational motion, adapting Newton's second law to describe the relation between torque and angular acceleration:

where

This can also be written as

We know that Moment of inertia

Substituting in equation (1) above we obtain.

or

*Hope this helps.

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For sake of completeness.

Angular acceleration is the rate of change of angular velocity and is denoted as

This can be defined either as:

where