Homework Help: Physics(Checking answer)

Posted by Pablo on Thursday, November 4, 2010 at 10:39pm.

Sorry for the re-post but I really need to know this, but now I just want to know if the question is right.

A spring with a force of 5.2 N/m has a relaxed length of 2.45. When a mass is attached to the end of the spring and allowed to come to rest. the vertical length of the spring is 3.57m. Calculate the elastic potential energy stored in the spring.

I got 3.26144

from 1/2* 5.2*1.12^2

Please help.

Physics(Checking answer) - MathMate, Thursday, November 4, 2010 at 10:52pm
Looks good to me, but do not give the answer to 6 places after the decimal point. Something like 3.26 is plenty.
Physics(Checking answer) - Pablo, Thursday, November 4, 2010 at 10:55pm
Ok thanks for the advice, now I can go to sleep.

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