- #36
Hannah
- 19
- 0
so just one thing since i used conservation of energy my system would have to isolated so would i have to include the Earth as my system or just track+spring+car since its isolated until it reaches the top part of the track?
You need to include the Earth, and you do that by considering the change in gravitational PE.Hannah said:so just one thing since i used conservation of energy my system would have to isolated so would i have to include the Earth as my system or just track+spring+car since its isolated until it reaches the top part of the track?