Solve the Problem $\frac { 1 } { 3 } \mathrm { sec }$

Multiple Choice

Solve the problem.
-A weight attached to a spring is pulled down 4 inches below the equilibrium position. Assuming that the period of the system is $\frac { 1 } { 3 } \mathrm { sec }$ , what is the frequency of the system?

A) $\frac { 2 \pi } { 3 }$ cycles per sec
B) 3 cycles per sec
C) $\frac { 2 } { 3 \pi }$ cycles per sec
D) 6 cycles per sec