Angular momentum is

Options

A. moment of momentum
B. product of mass and angular velocity
C. product of moment of inertia and velocity
D. moment in angular motion

Explanation

To solve the question regarding angular momentum, we can follow these steps:

### Step 1: Understand the Definition of Angular Momentum
Angular momentum is a physical quantity that represents the rotational inertia of an object in motion. It is denoted by the symbol \( L \) and is a vector quantity.

### Step 2: Identify the Formula for Angular Momentum
The angular momentum \( L \) of a point mass can be expressed as:
\[ L = r \times p \]
where:
- \( r \) is the position vector from the axis of rotation to the point mass,
- \( p \) is the linear momentum of the mass, given by \( p = m \cdot v \) (where \( m \) is mass and \( v \) is the velocity).

### Step 3: Analyze the Given Options
The options provided in the question are:
1. Moment of momentum
2. Product of mass and angular velocity
3. Product of moment of inertia and velocity
4. Moment of angular motion

### Step 4: Evaluate Each Option
- **Option 1: Moment of momentum** - This is a valid description of angular momentum since it relates to the rotational aspect of momentum.
- **Option 2: Product of mass and angular velocity** - This is not correct; angular momentum involves linear momentum, not just mass and angular velocity.
- **Option 3: Product of moment of inertia and velocity** - This is misleading; while moment of inertia is involved in angular momentum, it is not directly the product of moment of inertia and velocity.
- **Option 4: Moment of angular motion** - This is not a standard term used in physics.

### Step 5: Conclusion
Based on the analysis, the correct answer is:
**Option 1: Moment of momentum**.

### Final Answer:
Angular momentum is best described as the **moment of momentum**.

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