If the mass of body moves towards the axis of rotation, its moment of inertia:
Correct answer: B. Decreased
- A. Increased
- B. Decreased
- C. Remained constant
- D. None of the above
Explanation
If the mass of a body moves toward the axis of rotation, the moment of inertia of the body decreases. The moment of inertia (II is a measure of an object's resistance to changes in its rotation. It depends on both the mass distribution and the axis of rotation. The formula for the moment of inertia of a system of particles is given by: I=∑mi ⋅ri2 If the mass is moved towards the axis of rotation, reducing the value of "r", the moment of inertia will decrease. Conversely, if the mass is moved away, the moment of inertia will increase.
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