Two discs of same moment of inertia rotating their regular axis passing through centre and perpendicular to the plane of disc with angular velocities $ω_{1}$ and $ω_{2}$ . They are brought into contact face to the face coinciding the axis of rotation. The expression for loss of enregy during this process is :

\frac{1}{2} l (ω_{1} + ω_{2})^{2}

\frac{1}{4} l (ω_{1} - ω_{2})^{2}

l (ω_{1} - ω_{2})^{2}

\frac{l}{8} (ω_{1} - ω_{2})^{2}

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Two discs of same moment of inertia rotating their regular axis passing through centre and perpendicular to the plane of disc with angular velocities

ω_{1}

and

ω_{2}

. They are brought into contact face to the face coinciding the axis of rotation. The expression for loss of enregy during this process is :

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Question Text

Two discs of same moment of inertia rotating their regular axis passing through centre and perpendicular to the plane of disc with angular velocities

ω_{1}

and

ω_{2}

. They are brought into contact face to the face coinciding the axis of rotation. The expression for loss of enregy during this process is :

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