A block of mass 3.80 kg is placed against a horizontal spring of constant k = 805 N/m and pushed so the spring compresses by

Question

A block of mass 3.80 kg is placed against a horizontal spring of constant k = 805 N/m and pushed so the spring compresses by 0.0650 m.

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

Kunduz · Accepted Answer

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