A 75 G Block Is Placed into Oscillation of Amplitude

Multiple Choice

A 75 g block is placed into oscillation of amplitude 22 cm as it hangs from a vertical spring.If it observed to have a maximum speed of 14 m/s as it travels through the equilibrium position,what is the spring constant?

A) 300 N/m
B) 22 N/m
C) 4.8 N/m
D) 1200 N/m