For weights A, B, and C of 135 pounds at 15 inches, 205 pounds at 117 inches, and 85 pounds at 195 inches, where is the CG located?

To determine the center of gravity (CG) location, you calculate the moment for each weight, which is the product of the weight and its distance from a reference point (usually the leading edge of the wing or another fixed point). The total moment is then divided by the total weight.

In this case:

1. Calculate the moment for each weight:

• For the first weight: 135 pounds at 15 inches

Moment = 135 pounds * 15 inches = 2025 pound-inches.

• For the second weight: 205 pounds at 117 inches

Moment = 205 pounds * 117 inches = 24085 pound-inches.

• For the third weight: 85 pounds at 195 inches

Moment = 85 pounds * 195 inches = 16575 pound-inches.

2. Sum the total moment:

Total Moment = 2025 + 24085 + 16575 = 42685 pound-inches.

3. Sum the total weight:

Total Weight = 135 + 205 + 85 = 425 pounds.

4. Calculate the CG location:

CG = Total Moment / Total Weight = 42685 pound-inches / 425 pounds =