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Q. |
The spring balance works on the principle of - |
A. | Boyle's Law |
B. | Hooke's Law |
C. | Bernoulli's principle |
D. | Pascal's Law |
Answer» B. Hooke's Law | |
Explanation: 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. |
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