Let's analyze the forces one by one to understand their correct directions.
1. Normal Force:
- The normal force is the force exerted perpendicularly by a surface to support the weight of an object resting on it. It acts upward, opposite to the force of gravity.
- Direction: Upward
- Given Direction in Table: Upward
- Status: Correct
2. Tension by Eduardo:
- Eduardo is pulling the box to the left.
- Direction: Left
- Given Direction in Table: Left
- Status: Correct
3. Tension by Clara:
- Clara is pulling the box to the right.
- Direction: Right
- Given Direction in Table: Right
- Status: Correct
4. Kinetic Friction:
- Kinetic friction is the resistive force acting opposite to the direction of motion of the object.
- Given that Eduardo is pulling the box to the left with a force greater than Clara's force to the right, the net force causes motion to the left.
- The kinetic friction should act in the opposite direction of the motion, hence to the right.
- Direction: Right
- Given Direction in Table: Left
- Status: Incorrect
5. Gravity:
- Gravity pulls the box downward with a force equal to the product of the mass of the box and the acceleration due to gravity.
- Direction: Downward
- Given Direction in Table: Downward
- Status: Correct
Upon reviewing the directions of the forces, we identify that the given direction of kinetic friction is incorrect. It should act to the right, opposite to the motion of the box which is being pulled leftward by Eduardo.
Therefore, the force with the wrong direction in Leon's lab notebook is:
Kinetic friction.
