# Definition:Mass Density/Linear

< Definition:Mass Density(Redirected from Definition:Linear Mass Density)

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## Definition

The **linear mass density** of a one-dimensional body is its mass per unit length.

### Symbol

The usual symbol used to denote **linear mass density** is $\mu$ (Greek letter **mu**).

Sometimes $\lambda$ (Greek letter **lambda**) is also used.

### Dimension

The dimension of **linear mass density** is $\mathsf M \mathsf L^{-1}$: mass per unit length.

### Units

- The SI units of
**linear mass density**are $\mathrm {kg} \ \mathrm m^{-1}$ (kilograms per metre).

- The CGS units of
**linear mass density**are $\mathrm g \ \mathrm{cm}^{-1}$ (grams per centimetre).

Thus:

- $1 \ \mathrm{kg} \ \mathrm m^{-1} = 10 \ \mathrm g \ \mathrm{cm}^{-1}$

## Also known as

**Linear mass density** is usually referred to just as **linear density** when it is clear that **mass density** is the kind of **density** under discussion.

## Also see

- Results about
**linear mass density**can be found**here**.