Passage X) A 2kg block hangs without vibrating at the bottom end of a spring with a force constant of 400 N/m. The top end of the spring is attached to the ceiling of an elevator car. The car is rising with an upward acceleration of `5m/`s^(2)` when the accleration suddenly ceases at t=0 and the car moves upward with constant speed. (g=10m/`s^(2)`) What is the angular frequency of oscillation of the block after the acceleration ceases?A. `pi//4 rad`B. `pi//2 rad`C. `pi rad`D. `3pi//2 rad`

Passage X) A 2kg block hangs without vibrating at the bottom end of a

1.	Passage X) A 2kg block hangs without vibrating at the bottom end of a spring with a force constant of 400 N/m. The top end of the spring is attached to the ceiling of an elevator car. The car is rising with an upward acceleration of `5m/`s^(2)` when the accleration suddenly ceases at t=0 and the car moves upward with constant speed. (g=10m/`s^(2)`) What is the angular frequency of oscillation of the block after the acceleration ceases?A. `pi//4 rad`B. `pi//2 rad`C. `pi rad`D. `3pi//2 rad`
Answer» Correct Answer - D

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