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A box is being pulled by two ropes. Eduardo pulls to the left with a force of 500 N, and Clara pulls to the right with a force of 200 N. The box moves because of the two forces applied to it. Leon records the forces and direction of the forces acting on the box in his lab notebook.

\begin{tabular}{|c|c|}
\hline
Force & Direction of Force Vector \\
\hline
Normal & Upward \\
\hline
Tension by Eduardo & Left \\
\hline
Tension by Clara & Right \\
\hline
Kinetic friction & Left \\
\hline
Gravity & Downward \\
\hline
\end{tabular}

In the table, which force has the wrong direction?

A. Tension by Eduardo

B. Tension by Clara

C. Kinetic friction

D. Gravity

Sagot :

GinnyAnsweridn
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.
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