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A car accelerates down a hill, going from the rest to 30.0 m/s in 6.00 s. A toy inside the car hangs by a string from the car's ceiling. The ball in the figure represents the toy, of the mass 0.200 kg. The acceleration us such that the string remains perpendicular to the ceiling. Determine (a) the angle and (b) the tension in the string.

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