A disc of inertia I₁ spins at ωᵢ. A second coaxial disc of inertia I₂ initially at rest is dropped onto it. Both eventually spin at the same speed. Find mechanical energy lost through friction.

Physics · Rotational Motion · angular impulse in pure rotation and rotational collision

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A disc of inertia I₁ spins at ωᵢ. A second coaxial disc of inertia I₂ initially at rest is dropped onto it. Both eventually spin at the same speed. Find mechanical energy lost through friction.

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