Analysis of Charges in a Square Configuration
- The charges +2q, -q, +29. -q are placed at the corners of square ABCD
- Another charge +q is placed at the midpoint P of AD

Calculating the Resultant Force
- The force between charges is given by Coulomb's law, which states that the force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them
- To calculate the resultant force on the charge at P, we need to consider the individual forces acting on it due to each of the surrounding charges
- The forces between the charges at the corners of the square and the charge at P will differ in magnitude and direction
- By considering the distances and magnitudes of the charges, we can calculate the net force acting on the charge at P using vector addition

Explanation of Resultant Force
- The net force acting on the charge at P will be the vector sum of the forces due to the charges at the corners of the square
- The direction of the resultant force will depend on the individual forces and their orientations with respect to the charge at P
- By calculating the magnitudes and directions of the individual forces, we can determine the resultant force acting on the charge at P
- The net force will determine the motion of the charge at P, whether it will move towards or away from the charges at the corners of the square
In conclusion, by analyzing the charges placed in a square configuration and applying Coulomb's law, we can determine the resultant force acting on a charge at a specific point. This analysis helps in understanding the interactions between charges and predicting their behavior in an electric field.