A Mass of 0

Multiple Choice

A mass of 0.40 kg,hanging from a spring with a spring constant of 160 N/m,is set into an up-and-down simple harmonic motion.What is the speed of the mass when moving through a point at 0.05 m displacement? The starting displacement of the mass is 0.10 m from its equilibrium position.

A) zero
B) 1.4 m/s
C) 1.7 m/s
D) 1.2 m/s