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It consists of a 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 laboratory tripod is most commonly used in middle and high schools for basic heating experiments. However, tripods and bunsen burners have been made obsolete by hot plates, which are considered to be safer since there is no direct contact with the flame
