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Sahay Sir > Question Answers > NCERT Exemplar Class 11 > Physics > Chapter 6 - System of Particles and Rotational Motion > A solid cylinder of mass 20 kg rotates about its axis with angular speed 100 rad s^−1. The radius of the cylinder is 0.25 m. What is the kinetic energy associated with the rotation of the cylinder? What is the magnitude of angular momentum of the cylinder about its axis?

A solid cylinder of mass 20 kg rotates about its axis with angular speed 100 rad s^−1. The radius of the cylinder is 0.25 m. What is the kinetic energy associated with the rotation of the cylinder? What is the magnitude of angular momentum of the cylinder about its axis?

find its moment of inertia about an axis normal to the disc and passing through a point on its edge. Given moment of inertia of a disc of mass M and radius R about any of its diameters = mR^2/4