ABSTRACT
To determine the area ABCD of Figure 16.3 using the mid-ordinate rule: (i) Divide base AD into any number of equal inter-
vals, each of width d (the greater the number of intervals, the greater the precision)
(ii) Erect ordinates in the middle of each interval (shown by broken lines in Figure 16.3)
(iii) Accurately measure ordinates y1, y2, y3, etc. (iv) Area ABCD = d(y1 + y2 + y3 + y4 + y5 + y6) In general, the mid-ordinate rule states:
Area = (width of interval) (sum of mid-ordinates)
Problem 1. Calculate the work done when a force of 40 N pushes an object a distance of 500 m in the same direction as the force.
