<P> So for example, a platform that shows it is rated at 321 kilonewtons (72,000 lb), will safely support a 32,100 kilograms (70,800 lb) load . </P> <P> Specifications in kilonewtons are common in safety specifications for: </P> <Ul> <Li> the holding values of fasteners, Earth anchors, and other items used in the building industry . </Li> <Li> working loads in tension and in shear . </Li> <Li> rock climbing equipment . </Li> <Li> thrust of rocket engines and launch vehicles </Li> <Li> clamping forces of the various moulds in injection moulding machines used to manufacture plastic parts . </Li> </Ul> <Li> the holding values of fasteners, Earth anchors, and other items used in the building industry . </Li>

Express the si unit of force n in terms of the fundamental units of mass length and time