A horizontal spring is set up like the one in Fig. 11-3. It has an elastic constant of 80.0 N/m. A 2.00-kg mass, sitting on a frictionless horizontal surface, is attached to the end of the spring. The mass is displaced 20.0 cm to the right and released, whereupon it oscillates in SHM. Determine its acceleration (magnitude and direction) and its velocity (magnitude and direction) at its equilibrium position.

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v₁=0 v₁ = -Aw v₁=0 v₁ = Auh V, 0 V₁ = -Awa V₁=0 v₁ = Aup v₁=0 Equilibrium X=-₂x = 0 x=+xmax wwwww... Jaum www a=-max a=0 a = amis. a=0 =- 40 a= a a=0 www.... T 4 x 0x-A Fig. 11-3 a=-amax 1=0 1=1/T LIW 7 I=T 1 mlei 1=3r t=2T