NEET  >  Theorem of Parallel Axis

# Theorem of Parallel Axis Video Lecture - Physics Class 11 - NEET

## Physics Class 11

116 videos|451 docs|188 tests

## FAQs on Theorem of Parallel Axis Video Lecture - Physics Class 11 - NEET

 1. What is the theorem of parallel axis? Ans. The theorem of parallel axis states that the moment of inertia of a body about any axis parallel to an axis through its center of mass is equal to the sum of the moment of inertia about the center of mass and the product of the body's mass and the square of the distance between the two axes.
 2. How is the moment of inertia calculated using the parallel axis theorem? Ans. To calculate the moment of inertia using the parallel axis theorem, you need to know the moment of inertia of the body about an axis passing through its center of mass, the mass of the body, and the distance between the two axes. The formula is: I = Icm + md^2, where I is the moment of inertia about the parallel axis, Icm is the moment of inertia about the center of mass, m is the mass of the body, and d is the distance between the two axes.
 3. What is the significance of the parallel axis theorem? Ans. The parallel axis theorem is significant because it allows us to calculate the moment of inertia of a body about any parallel axis, even if the moment of inertia about the center of mass is known. This theorem helps in analyzing the rotational motion of objects and understanding how their mass distribution affects their rotational behavior.
 4. How does the parallel axis theorem relate to rotational motion? Ans. The parallel axis theorem is directly related to rotational motion as it provides a method to calculate the moment of inertia of a body about any axis parallel to its center of mass. Moment of inertia is a measure of an object's resistance to changes in its rotational motion. By using the parallel axis theorem, we can determine how the distribution of mass in an object affects its rotational behavior.
 5. Can the parallel axis theorem be applied to any object? Ans. Yes, the parallel axis theorem can be applied to any object, regardless of its shape or size. As long as the moment of inertia about the center of mass and the distance between the two axes are known, the parallel axis theorem can be used to calculate the moment of inertia about any parallel axis. This theorem is applicable in various fields such as physics, engineering, and mechanics, where understanding rotational motion is important.

## Physics Class 11

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