SATHEE: Rotational Motion Question 184

Rotational Motion Question 184

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

Options:

A) $M R^{2} / 2$

B) $M R^{2}$

C) $2 M R^{2}$

D) $M R^{2} / 4$

Show Answer

Answer:

Correct Answer: A

Solution:

[a] Perp axis theorem

$I_{x} + I_{y} = I_{z}$

$\Rightarrow 2 I = M R^{2}$

$I = \frac{M R^{2}}{2}$

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Rotational Motion Question 184

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

Options:

Answer:

Solution:

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