A Block Is Placed in Oscillation on a Frictionless Horizontal

Multiple Choice

A block is placed in oscillation on a frictionless horizontal surface attached to a spring that requires 125 N for the block to be stretched 15 cm away from equilibrium.From this position it is released,and oscillates with a period of 0.25 s.What is the mass of the block?

A) 0.66 kg
B) 4.1 kg
C) 1.3 kg
D) 5.3 kg