An Object Attached to an Ideal Spring Oscillates with an Angular

Multiple Choice

An object attached to an ideal spring oscillates with an angular frequency of 2.81 rad/s. The object has a maximum displacement at t=0.00 s of 0.232 m. If the force constant (spring constant) is 29.8 N/m, what is the potential energy stored in the mass-spring system when t=1.42 s?

A) 0.399 J
B) 0.256 J
C) 0.329 J
D) 0.350 J