A coiled spring with a spring constant of 500 nm is, Ask an Expert

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A coiled spring with a spring constant of 500 N/m is compressed some distance, "x". When the spring uncoils, it releases a ball of mass 0.5 kg. THe ball travels through a flat surface that is 2.1 m long and has a coefficient of friction of 0.2. At the end of this flat surface is a frictionless ramp which makes an incline of 25 deg. If the goal is to have the ball come to a complete stop at the top of the ramp 0.35 m from the base, what distance "x" should the spring be compressed?

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