試題詳解

12. A 2.0 kg block on a frictionless table is connected to two ideal massless springs with spring constants k₁ and k₂ whose opposite ends are fixed to walls, as shown in the figure. What is the angular frequency of the oscillation if k₁=7.6 Nm and k₂=5.0 N/m?

(A) 2.5 rad/s
(B) 3.5 rad/s
(C) 0.40 rad/s
(D) 0.56 rad/s
(E) 5.5 rad/s.