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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 > Two discs of same moment of inertia rotating about their regular axis passing through centre and perpendicular to the plane of disc with angular velocities ω1​ and ω2​. They are brought into contact face to face coinciding the axis of rotation. The expression for loss coinciding of energy during this process is:

Two discs of same moment of inertia rotating about their regular axis passing through centre and perpendicular to the plane of disc with angular velocities ω1​ and ω2​. They are brought into contact face to face coinciding the axis of rotation. The expression for loss coinciding of energy during this process is:

initial position and sense of revolution are indicated in the fig. y - projection of the radius vector of rotating particle P is : the period of revolution The radius of circle