The angular frequency of a spring-block system is ω₀. The system is suspended from the ceiling of an elevator moving downward with constant speed v₀. The lift is suddenly stopped. Taking downward as positive, choose the wrong statement.
Options

Question

The angular frequency of a spring-block system is ω₀. The system is suspended from the ceiling of an elevator moving downward with constant speed v₀. The lift is suddenly stopped. Taking downward as positive, choose the wrong statement.

Options

G1 Physics · Accepted Answer

At the crossing point x=A/2, the first oscillator can have phase 5π/6 when moving opposite to the second. For the second oscillator of amplitude 2A, sinφ₂=(A/2)/(2A)=1/4 with the appropriate velocity sign. Therefore the phase difference is 5π/6−sin⁻¹(1/4). Correct option: 1.