11) Work done by a variable force is determined by dividing: (Work, Power & Energy, Work Done by Constant Force and Variable forces)

Explanation

Explanation: To calculate the work done by a variable force over a finite distance, we need to account for the changes in both force and displacement along the path. Dividing only force or only displacement wouldn't provide a complete picture of the work done. By dividing both into small intervals and summing the work done in each interval, we can obtain an accurate estimate of the total work. Incorrect Options:(a) While dividing force into small intervals helps in approximating variable forces, it doesn't account for the variation in displacement, which is essential for calculating work.(b) This method only considers the path taken, but it doesn't take into account the varying force applied at different points. This leads to an incomplete picture of the work done.(d) This approach is inconsistent and doesn't provide a reliable way to calculate work done by a variable force.