Posted by **bob** on Wednesday, January 22, 2014 at 6:19pm.

A spring with a force constant of 5.4 N/m has

a relaxed length of 2.63 m. When a mass is

attached to the end of the spring and allowed

to come to rest, the vertical length of the

spring is 3.64 m.

Calculate the elastic potential energy

stored in the spring.

Answer in units of J Your answer must be

within

±

1.0%

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