A bead is attached to a light string and whirls in a horizontal circle of radius…

PHYSICS · Single correct · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

10\,\text{g}

bead is attached to a light string and whirls in a horizontal circle of radius

5.0\,\text{cm}

about a vertical axis through the circle’s center. What is the bead’s rotational inertia about that axis? (a)

5.0\times10^{-4}\,\text{kg}\cdot\text{m}^{2}

(b)

2.5\times10^{-3}\,\text{kg}\cdot\text{m}^{2}

(c)

1.25\times10^{-5}\,\text{kg}\cdot\text{m}^{2}

(d)

2.5\times10^{-5}\,\text{kg}\cdot\text{m}^{2}