# Any thin tube

## Values for calculation

## Calculation

### Polar moment of inertia

### Angle of twist

### Torsion stress (average)

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$$K=\cfrac{4\cdot A^2}{U/t}$$

$$θ=\cfrac{T\cdot 10^3\cdot L}{K\cdot G}$$

$$τ_{average}=\cfrac{10^3\cdot T}{2\cdot t\cdot A}$$