A 0.1-kg particle moves along the x axis under the influence of a conservative force. The potential energy is given by U(x) = (11 N/m) x² where x locates the position of the particle. If the particle has a speed of 4.5 m/s when it is at 2.0 m, its speed when it is at the origin Xx S =

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A: Given data, Mass of ball m=420 g=0.42 kg Length of string L=47 cm=0.47 m Angle θ=23°

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