Mastering Physics Solved! The position of a 51g oscillating mass is given by x(t)=(2.1cm)cos12t

The position of a 51g oscillating mass is given by x(t)=(2.1cm)cos12t, where t is in seconds.
Determine the amplitude.
Determine the period.
Determine the spring constant.
Determine the maximum speed.
Determine the total energy.
Determine the velocity at t= 0.41s