A 025-Kg Object Is Attached to a Spring with Spring Constant

question 31

Multiple Choice

A 0.25-kg object is attached to a spring with spring constant k = 10 N/m and moves with simple harmonic motion over a horizontal frictionless surface.At the instant that it is displaced from equilibrium by −0.051 m,what is its acceleration?
​

• A) 1,275 m/s²
• B) −127.5 m/s²
• C) 0.1 m/s²
• D) 2 m/s²
• E) ​0.5 m/s²