A 0.1 -kilogram block is attached to an initially unstretched spring of force constant k = 40 newtons per meter as shown. The block is released from rest at time t = 0.
What will the resulting ** of oscillation be?
(A) π/40s
(B) π/20s
(C) π/10s
(D) π/5s
(E) π/4s
