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| 1. |
Two coaxial discs, having moments of inertia I₁ and I₁/2,area rotating with respectively angular velocities ω₁ and ω₁/2, about their common axes. They are brought in contact with each other and thereafter they rotate with a common angular velocity. If Eᶠ and Eᵢ are the final and initial total energies, then (Eᶠ – Eᵢ) is:(A) (I₁ω₁²)/6(B) (3I₁ω₁²)/8(C) (-I₁ω₁²)/12(D) (-I₁ω₁²)/24 |
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