Question

The moment of inertia of a solid cylinder of mass 'm', radius 'R' and length l' about the longitudinal axis or polar axis is-

• A. $$\frac {mR^2}{2}$$
• B. $$\frac {mR^2}{4}$$
• C. $$\frac {mR^2}{8}$$
• D. $$\frac {mR^2}{6}$$

Answer 1

Answer:

$$\frac {mR^2}{2}$$

The moment of inertia of a solid cylinder of mass 'm', radius 'R' and length 'l' about the longitudinal axis is $\frac{m R ^ 2}{ 2}$ The moment of inertia of a body is the sum of the product of the masses of the particles and the square of their respective distances from the axis of rotation.