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September 18, 2014

September 18, 2014

Posted by **Mariam** on Friday, September 7, 2012 at 11:38am.

a. What is the potential energy stored in the spring?

b. What is the maximum speed tha it van produve in a ball of mass 0.15kg?

- college physics -
**Elena**, Friday, September 7, 2012 at 5:43pmk=F/x=24/0.08 = 300 N/m

PE = kx²/2 = 300•(0.08)²/2= 0.96 J.

KE=PE

mv²/2 =kx²/2

v=sqrt(kx²/m) = sqrt(300•(0.08)²/0.15) = 3.58 m/s

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