A mass of 1 kg is suspended from a spring whose spring constant is 9 N/m. The mass is initially released from a point 1 m above the equilibrium position with an upward velocity of √3 m/s. Find the times for which the mass is heading downward at a velocity of 3 m/s. (Enter your answers as a comma-separated list. Let n represent an arbitrary integer.) nπ T π -- [ + ] · + (−1)" ( ²5 ) t = 3 18 X S

A mass of 1 kg is suspended from a spring whose spring constant is 9 N/m. The mass is initially released from a point 1 m above the equilibrium position with an upward velocity of √3 m/s. Find the times for which the mass is heading downward at a velocity of 3 m/s. (Enter your answers as a comma-separated list. Let n represent an arbitrary integer.) nπ T π -- [ + ] · + (−1)" ( ²5 ) t = 3 18 X S