Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

System of Particle and Rotational Motion

Question:

Moment of inertia of a circular wire of mass M and radius R about its diameter is : 

Options:

1/4 MR2

1/2 MR2

2MR2

MR2

Correct Answer:

1/2 MR2

Explanation:

The moment of Inertia of circular wire about axis passing through its center and perpendicular to its plane is $MR^2$

Using the perpendicular axis theorem, the MI about the axis passing through its diameter is $\frac{1}{2} MR^2$