EXPERIMENT (Individual activity) This activity will help you understand the concept of energy diagram. Materials: *U-shaped bowl *marble Procedure: 1. Facing the U-shaped bowl, position the marble at the left edge. 2. Release the marble and observe its FIRST path where it just reached the right side of the bowl. 3. Continue the observation until the marble becomes stable. Answer the following questions: 1. Make a 1-dimensional graph of the marble's movement according to the second procedure of the activity. 2. Did the marble go back to the starting point? Why? 3. What type of conservative force(s) are present? Nonconservative force(s)?

EXPERIMENT (Individual activity) This activity will help you understand the concept of energy diagram. Materials: U-shaped bowl marble Procedure: 1. Facing the U-shaped bowl, position the marble at the left edge. 2. Release the marble and observe its FIRST path where it just reached the right side of the bowl. 3. Continue the observation until the marble becomes stable. Answer the following questions: 1. Make a 1-dimensional graph of the marble's movement according to the second procedure of the activity. 2. Did the marble go back to the starting point? Why? 3. What type of conservative force(s) are present? Nonconservative force(s)?