On the principle of which of the following laws of Physics does the spring balance work?

Options :
  1. Boyle's law
  2. Hooke's law
  3. Bernoulli's principle
  4. Pascal's law
Answer and Explanation :-

Answer: Option 2


A spring balance apparatus is simply a spring fixed at one end with a hook to attach an object at the other. It works on the principle of Hooke's Law, which states that the force needed to extend a spring is proportional to the distance that the spring is extended from its rest position. Therefore the scale markings on the spring balance are equally spaced.

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