TFM
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A good link, Thanks 
so for the velocity:
1.67v = mg
[tex]v = \frac{mg}{1.67}[/tex]
[tex]m = vol*\rho[/tex]
[tex]v = \frac{vol \rho g}{1.67}[/tex]
the volume is:
[tex]4*(length of side*area) = 4(0.1*\pi * 0.0005^2) = \pi * 10^{-6}[/tex]
[tex]v = \frac{\pi * 10^{-6} (8960) (9.8)}{1.67}[/tex]
this gives v to be: 0.165 m/s
Seems rather small?
so for the velocity:
1.67v = mg
[tex]v = \frac{mg}{1.67}[/tex]
[tex]m = vol*\rho[/tex]
[tex]v = \frac{vol \rho g}{1.67}[/tex]
the volume is:
[tex]4*(length of side*area) = 4(0.1*\pi * 0.0005^2) = \pi * 10^{-6}[/tex]
[tex]v = \frac{\pi * 10^{-6} (8960) (9.8)}{1.67}[/tex]
this gives v to be: 0.165 m/s
Seems rather small?