AP and TS EAMCET Engineering Model Paper 9

One end of a massless spring of relaxed length 50 cm and spring constant k is fixed on top of a frictionless inclined plane of inclination θ = 30° as shown in figure. When a mass m = 1.5 kg is attached at the other end, the spring extends by 2.5 cm. The mass is displaced slightlyand released. The time period (in seconds) of the resulting oscillation will be