A cart is attached to a horizontal ideal spring with spring constant

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Oscillations · Oscillations

Problem

A 0.50 kg0.50\,\text{kg} cart is attached to a horizontal ideal spring with spring constant k=200 N ⁣/ ⁣mk=200\,\text{N}\!/\!\text{m}. The cart is pulled 0.10 m0.10\,\text{m} to the right of equilibrium and released from rest on a frictionless track. What is the magnitude of the cart’s acceleration immediately after it is released? (a) 40 m ⁣/ ⁣s240\,\text{m}\!/\!\text{s}^2 (b) 20 m ⁣/ ⁣s220\,\text{m}\!/\!\text{s}^2 (c) 10 m ⁣/ ⁣s210\,\text{m}\!/\!\text{s}^2 (d) 400 m ⁣/ ⁣s2400\,\text{m}\!/\!\text{s}^2

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