massprop_neck {AvInertia} R Documentation

## Neck mass properties

### Description

Calculate the moment of inertia of a neck modeled as a solid cylinder

### Usage

```massprop_neck(m, r, l, start, end)
```

### Arguments

 `m` Mass of muscle (kg). `r` Radius of the neck (m). `l` Length of the stretched neck (m). `start` a 1x3 vector (x,y,z) representing the 3D point where neck starts. Frame of reference: VRP | Origin: VRP. `end` a 1x3 vector (x,y,z) representing the 3D point where neck ends. Frame of reference: VRP | Origin: VRP.

### Value

This function returns a list that includes:

• Ia 3x3 matrix representing the moment of inertia tensor of a neck modeled as a solid cylinder.

• CGa 1x3 vector representing the center of gravity position of a neck modeled as a solid cylinder.

• ma double that returns the neck mass.

### Warning

Parallel axis theorem does not apply between two arbitrary points. One point must be the object's center of gravity.

### Author(s)

Christina Harvey

[Package AvInertia version 0.0.1 Index]