MS Beam Weight Formula

mass = Volume x density

Weight = mass x acceleration due to gravity (g)

It is taught in pre-highschool.

Never heard of a Micro-Soft (MS) beam. What is it ?

Another unknown acronym. Go Figure!

Weight = kg/m × m.

Weight = density x volume x g

= density (kg/m³) x volume (m³) x g

Weight per kg/m = (density :kg/m³) x (volume :m³) x g)/ (kg/m) :: per = /

= (crossection perpendicular to the direction of measurement of meter) x g

assuming the OP meant not kg but kgf , we can neglect g (gets merged with the kg)

hence

Weight per kg/meter = crossection of the beam perpendicular to the direction of measurement

QED

_{< deep satisfied breath after successful solution of the problem by fundamental principles>}