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Which one of the following statements co...

Which one of the following statements concerning the moment of inertia I is false?

A

Moment of inertia I may be expressed in units of `kg*m^(2)`.

B

Moment of inertia I depends on the angular acceleration of the object as it rotates.

C

Moment of inertia I depends on the location of the rotation axis relative to the particles that make up the object.

D

Moment of inertia I depends on the orientation of the rotation axis relative to the particles that make up the object

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The correct Answer is:
To determine which statement concerning the moment of inertia \( I \) is false, we will analyze each statement one by one. ### Step-by-Step Solution: 1. **Understanding Moment of Inertia**: The moment of inertia \( I \) is defined as the sum of the products of the mass of each particle in a body and the square of its distance from the axis of rotation. The formula is given by: \[ I = \sum m_i r_i^2 \] where \( m_i \) is the mass of the \( i^{th} \) particle and \( r_i \) is its distance from the axis of rotation. 2. **Analyzing the Statements**: We have four statements to evaluate: - **Statement 1**: The moment of inertia \( I \) may be expressed in units of \( \text{kg m}^2 \). - **Evaluation**: This statement is true. The units of moment of inertia are indeed \( \text{kg m}^2 \). - **Statement 2**: The moment of inertia \( I \) depends on the angular acceleration of the object as it rotates. - **Evaluation**: This statement is false. The moment of inertia is a property of the mass distribution relative to the axis of rotation and does not depend on angular acceleration. - **Statement 3**: The moment of inertia depends on the location of the rotation axis relative to the particles that make up the object. - **Evaluation**: This statement is true. The moment of inertia changes if the axis of rotation is moved because the distances \( r_i \) change. - **Statement 4**: The moment of inertia depends on the orientation of the rotation axis relative to the particles that make up the object. - **Evaluation**: This statement is true. The orientation of the axis affects the distances from the particles to the axis, thus changing the moment of inertia. 3. **Conclusion**: After evaluating all the statements, we find that the false statement is: - **Statement 2**: The moment of inertia \( I \) depends on the angular acceleration of the object as it rotates. ### Final Answer: The false statement concerning the moment of inertia \( I \) is **Statement 2**. ---
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