kutulu

And so is the kilogram measurement you see on the scales. The factor g/gc is equal to 1 kgf/kgm or 1 lbf/lbm. As a result, on Earth an object with a 1kg mass weighs 1kg force. The f subscript is just dropped because for common everyday applications it doesn't need to be there. Read to the bottom of the link I posted previously, they briefly touch on kgf as if it is rarely used but when was the last time you saw a scale give a reading in newtons? They all say kg (meaning kgf).

Therefore, your mass and weight both have the same numeric value, even if the units are different. Kgf is not an si unit but it is a unit derived from the metric system is used more often in everyday life. It really causes havoc when you have to remember when to add in the gc factor.

It all works because we all live on the same planet and even though the acceleration due to gravity is higher in Death Valley than it is at the top of Mount Everest, it's not enough of a difference to make it a gross inaccuracy.

I rememeber back in my lab days we had an instructor that liked to screw with us. He had pressure guages that represented all sorts of units and he'd switch them around too. There might be 4 guages and they'd all have different units (psi, lb/ft2, kg/m2, kg/cm2).