<P> A spring scale or spring balance or newton meter is a type of weighing scale . It consists of spring fixed at one end with a hook to attach an object at the other . It works by Hooke 's Law , which states that the force needed to extend a spring is proportional to the distance that spring is extended from its rest position . Therefore , the scale markings on the spring balance are equally spaced . A spring scale can not measure mass , only weight . </P>
<P> A spring scale or spring balance or newton meter is a type of weighing scale . It consists of spring fixed at one end with a hook to attach an object at the other . It works by Hooke 's Law , which states that the force needed to extend a spring is proportional to the distance that spring is extended from its rest position . Therefore , the scale markings on the spring balance are equally spaced . A spring scale can not measure mass , only weight . </P>
on a spring scale that measures force a reading shows
on a spring scale that measures force a reading shows
weight
weight