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A block of mass 2.40 kg is placed against a horizontal spring of constant k =...

A block of mass 2.40 kg is placed against a horizontal spring of constant k = 835 N/m and pushed so the spring compresses by 0.0750 m. HINT

(a) What is the elastic potential energy of the block-spring system (in J)? J

(b) If the block is now released and the surface is frictionless, calculate the block's speed (in m/s) after leaving the spring. m/s

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