The above graph shows the potential energy U(x) of a particle as a function of its position x. The total mechanical energy in the system is marked with the dashed horizontal line at 4 Joules. 1. On the above graph, identify all the turning points for this particle. That is, identify where the particle will stop going in one direction and travel in the other. Mark all these points with a T. 2. Describe a physical system that could have this potential energy function.

The above graph shows the potential energy U(x) of a particle as a function of its position x. The total mechanical energy in the system is marked with the dashed horizontal line at 4 Joules. 1. On the above graph, identify all the turning points for this particle. That is, identify where the particle will stop going in one direction and travel in the other. Mark all these points with a T. 2. Describe a physical system that could have this potential energy function.