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Sahay Sir > Question Answers > NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions > Physics > Chapter 11 - Rotational Mechanics > A round disc of moment of inertia I2​ about its axis perpendicular to its plane and passing through its centre is placed over another disc of moment of inertia I1​ rotating with an angular velocity ω about the same axis. The final angular velocity of the combination of disc is

A round disc of moment of inertia I2​ about its axis perpendicular to its plane and passing through its centre is placed over another disc of moment of inertia I1​ rotating with an angular velocity ω about the same axis. The final angular velocity of the combination of disc is

An electric fan has blades of length 30cm as measured from the axis of rotation. If the fan is rotating at 1200 rev/min the acceleration of a point on the tip of the blade is about