- #1
Chantry09
- 61
- 0
Homework Statement
http://img521.imageshack.us/img521/4360/physicsjg1.jpg
Homework Equations
Elastic Energy = 0.5 x k x X²
Kinetic Energy = 0.5 x m x V²
The Attempt at a Solution
At 1m i worked out there is 1.922J of energy (0.5 x 10 x 0.62²) stored in the spring. Since no energy is lost and initially the spring has no energy i assume it must be:
Initial Kinetic Energy = Final Elastic Energy
Initial Kientic Energy = 1.922J
0.5 x m x V² = 1.922
0.5 x 10 x V² = 1.922
5 x V² = 1.922
V² = 0.384
V = 0.634 m/s
The answer however should be 0.876 m /s. Can someone please help me see where i have gone wrong?
James
Last edited by a moderator: