Answer Posted / stavros siamantas

Firstly, you need to evaluate the section area of your beam.

If the section area is a cicrle, then:

A=(1/4)*π*d^2 -> A=(1/4)*3.14159*0.008^2 -> A=5.026E-05 m2

Then, in order to acquire mass per running length, you just multiply the section area with the density of the subject material. In our case, ρ_steel=7850kg/m3.

So, we get: W/L=A*ρ_steel=5.026Ε-05*7850 ->

W/L=0.3946 kg/m

Multiplying with the length of our beam (1m in our case), we get W=0.3946kg.

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