The discussion revolves around a physics problem related to energy conservation in a roller coaster scenario. Participants are exploring the application of energy equations to analyze the motion of a cart on a track, particularly focusing on the relationship between kinetic and gravitational potential energy.
The discussion is ongoing, with participants providing guidance on how to approach the problem. Some have suggested writing equations to express total energy, while others are still grappling with the implications of missing information. There is a mix of understanding and confusion regarding the relationship between energy components.
Participants note the challenge of solving the problem with limited information, specifically the mass of the cart and how it affects calculations. The original poster expresses frustration with the complexity of the topic.
Definitely.scolaiw said:I am assuming it require Energy equations
For some reason, you set KE = GPE. Instead, consider the total energy at any point. That total energy doesn't change. Write an equation expressing that fact.The attempt at solution = Fail
Call the mass of the cart 'm'. It doesn't matter and will drop out of any calculation.scolaiw said:I still don't get it... How can you do so, without knowing the mass of "cart"? Where does all the velocities factor into this?
You don't need the actual numerical value for the total energy. (You don't have the mass, afterall.) All you need to find is the height of point Y and you are given all the information you need to do that.scolaiw said:Yeah that's what I don't get, how can you get the total mechanical energy from so little information?
Exactly!scolaiw said:I am thinking 0.5mv^2 + mgh = 0.5mv^2 + mgh and solving for second h.