Question

In balance wheel of watch, the factors that make its oscillations uniform are :

• A. tension in string
• B. moment of inertia of balance wheel
• C. temperature
• D. pressure

Answer 1

The correct option is B moment of inertia of balance wheel

Balanced wheel is a weighted wheel that rotates back and forth, being returned toward its central position by a spiral torsional spring. So it rotates by the use of its inertia.