# A block of mass 3.8 kg is placed against a horizontal spring of constantk = 735 N/m and pushed so the spring compresses by 0.0550 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.

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Asked Dec 9, 2019
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A block of mass 3.8 kg is placed against a horizontal spring of constant
k = 735 N/m and pushed so the spring compresses by 0.0550 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.
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## Expert Answer

Step 1

(a) The elastic potential energy of...

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