When a Mass of 180 G Is Attached to a Vertical

Multiple Choice

When a mass of 180 g is attached to a vertical spring and lowered to its equilibrium position, it is found that the spring extends 12 cm. If the mass is now displaced from its equilibrium position, what is the period of the resulting oscillations?

A) 2.2 s
B) 3.7 s
C) 0.69 s
D) 9.0 s
E) 1.5 s