Determining the CG

Determining the CG

One of the easiest ways to understand weight and balance
is to consider a board with weights placed at various
locations. We can determine the CG of the board and
observe the way the CG changes as the weights are moved.
The CG of a board like the one in Figure 2-4 may be
determined by using these four steps:

1. Measure the arm of each weight in inches from the
datum.

2. Multiply each arm by its weight in pounds to determine
the moment in pound-inches of each weight.

3. Determine the total of all weights and of all the
moments. Disregard the weight of the board.

4. Divide the total moment by the total weight to
determine the CG in inches from the datum.