Write SI unit of angular momentum:

Explanation

To find the SI unit of angular momentum, we can follow these steps:

### Step 1: Understand the Definition of Angular Momentum
Angular momentum (L) is defined as the product of an object's moment of inertia and its angular velocity. It can also be expressed in terms of linear momentum.

### Step 2: Identify the Formula for Angular Momentum
The formula for angular momentum can be expressed as:
\[ L = m \cdot v \cdot r \]
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