The motor of mass M is supported by a simply supported beam of negligible mass. If block A of mass m is clipped onto the rotor, which is turning at constant angular velocity of , determine the amplitude of the steady-state vibration. When the beam is subjected to a concentrated force of P at its mid-span, it deflects δ = PL³/48EI at this point. Here E is Young’s modulus of elasticity, a property of the material, and I is the moment of inertia of the beam’s crosssectional area.

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