Concepts Of Physics MCQ Edition [Volume 1]
- Exam
- Concepts Of Physics MCQ Edition [Volume 1]
- Subject
- Physics
- Chapter
- Rotational Mechanics
Concepts Of Physics MCQ Edition [Volume 1] · Physics · Rotational Mechanics
A uniform rod with a mass of 0.50 kg and a length of 1 m has a...
A uniform rod with a mass of and a length of has a moment of inertia of about an axis perpendicular to it. Determine the distance from this axis to the middle point of the rod.
Options
- A
- B
- C
- D
Correct answer
A.
Step-by-step solution
The moment of inertia of a uniform rod about an axis passing through its center of mass and perpendicular to its length is given by:
Substituting the given values and :
According to the parallel axis theorem, the moment of inertia about any parallel axis is:
where is the distance from the axis to the center of mass (middle point) of the rod.
Given , substituting the values gives:
Substituting the given values and :
According to the parallel axis theorem, the moment of inertia about any parallel axis is:
where is the distance from the axis to the center of mass (middle point) of the rod.
Given , substituting the values gives: