Posted by J on Friday, October 15, 2010 at 4:17am.
A horizontal spring, resting on a frictionless tabletop, is stretched 14 from its unstretched configuration and a 1.00 mass is attached to it. The system is released from rest. A fraction of a second later, the spring finds itself compressed 3.6 from its unstretched configuration.
How does its final potential energy compare to its initial potential energy? (Give your answer as a ratio, final to initial.)

physics  drwls, Friday, October 15, 2010 at 6:11am
You need stretch and mass dimensions after your numbers. However, in this case we can answer it anyway.
Potential Energy of a spring is proportional to the square of the stretch (or compression) dimension. 3.6 is 25.7% of 14. The P.E. will be (0.257)^2 = 6.6% of the original maximumstretch value. The rest (93.4%) of the original energy becomes kinetic energy at that point
Answer This Question
Related Questions
 Physics  A 2.50 mass is pushed against a horizontal spring of force constant 26...
 Physics  Need help on part B! A 2.50 mass is pushed against a horizontal spring...
 mechanics: simple harmonic oscillation  Consider an ideal spring that has an ...
 Physics Urgent please help  Consider an ideal spring that has an unstretched ...
 science  A 4.50 g mass resting on a horizontal, frictionless surface is ...
 PHYSICS  a 0.1 kg mass is suspended at rest from a spring near the Earth's ...
 physics  a 0.1 kg mass is suspended at rest from a spring near the Earth's ...
 physics  If a 0.1 kg mass is suspended at rest from a spring near the Earth's ...
 physics  A 0.46 kg mass is attached to a spring with a spring constant of 145 N...
 Physics  An ideal spring with a stiffness of 329 N/m is attached to a wall, and...
More Related Questions