Question

A spring balance works on the principle of : (i) gravitational force (ii) magnetic force (iii) restoring elastic force (iv) frictional force

February 28, 2024

Answer

restoring elastic force

Reason — In a spring balance, a spring is fixed at one end with a hook attached to an object at the other end. When the spring is stretched, the spring exerts a force F opposite to the direction of displacement of its free end, the magnitude of this force is directly proportional to the magnitude of displacement. This force is restoring force.

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