Question

The principle of spring balance is _________.

• A. Hooke’s law
• B. law of string
• C. law of length
• D. none of these

Answer 1

The correct option is A

Hooke’s law

Hooke’s law

1. Hooke’s law is the principle of the spring balance.
2. Formula for Hooke's law is $\mathrm{F}=-\mathrm{kx}$.
3. Springs work according to Hooke's law. According to Hooke's law, the elongation of a material is proportional to the stress applied within the elastic limits of the material.

Hence, the correct option is (a).