Question: A plastic spring with spring constant (k=450 mathrm{~N} / mathrm{m}) has a relaxed length of (0.100 mathrm{~m}). The spring is positioned vertically on a table,

A plastic spring with spring constant \(k=450 \mathrm{~N} / \mathrm{m}\) has a relaxed length of \(0.100 \mathrm{~m}\). The spring is positioned vertically on a table, and a charged plastic \(1.00-\mathrm{kg}\) sphere is placed on the top end of the spring. Another charged object is suspended above the sphere without making contact. If the length of the spring is now \(0.0950 \mathrm{~m}\), what are the magnitude and direction of the electric force exerted on the sphere?

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