Question

A block of mass 3.40 kg is placed against a horizontal spring of constant k =...

A block of mass 3.40 kg is placed against a horizontal spring of constant k = 725 N/m and pushed so the spring compresses by 0.0400 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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