Question: A particle that hangs from a spring oscillates with an angular frequency w. The spring-particle system is suspended from the ceiling of an elevator car

A particle that hangs from a spring oscillates with an angular frequency w. The spring-particle system is suspended from the ceiling of an elevator car and hangs motionless (relative to the elevator car), as the car descends at a constant speed v. The car then stops suddenly. Derive a formula for the amplitude with which the particle oscillates. (Assume the mass of the spring is negligible.)

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