A mass (m=0.78kg ) is connected to a spring of spring constant k=60.13N/m and set into simple harmonic motion along the x -axis about the point x=0m . At time t=0s , the mass is located at r (0)=0.158mi^ and traveling with velocity v (0)=0.98m/si^ . What is the position of the mass at time t=0.511s