A block of mass 3.20 kg is placed against a horizontal spring of constant k = 715 N/m and pushed so the spring compresses by 0.0650 m. HINT   What is the elastic potential energy of the block-spring system (in J)?     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

Principles of Physics: A Calculus-Based Text
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Author:Raymond A. Serway, John W. Jewett
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Chapter7: Conservation Of Energy
Section: Chapter Questions
Problem 5P: A block of mass 0.250 kg is placed on top of a light, vertical spring of force constant 5 000 N/m...
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A block of mass 3.20 kg is placed against a horizontal spring of
constant k = 715 N/m and pushed so the spring compresses by 0.0650 m.
HINT
 
What is the elastic potential energy of the block-spring system (in J)?
 
 
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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