If an additional 40 lb bag is moved from 120 inches to 60 inches (weight still 2,220 lb), what is the CG?

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Multiple Choice

If an additional 40 lb bag is moved from 120 inches to 60 inches (weight still 2,220 lb), what is the CG?

Explanation:
Moving a weight changes the center of gravity by the change in moment divided by the total weight. Here, a 40 lb bag is moved 60 inches toward the nose (from 120" to 60"), so the moment about the reference decreases by 40 × 60 = 2,400 inch-pounds. With a total weight of 2,220 lb, the shift in CG is ΔCG = ΔMoment / total weight = -2,400 / 2,220 ≈ -1.08 inches. The negative sign means the CG moves forward (toward the nose). If the original CG was about 77 inches, subtracting about 1.08 inches gives roughly 75.9 inches, which rounds to about 76 inches. So the new CG is approximately 76 inches.

Moving a weight changes the center of gravity by the change in moment divided by the total weight. Here, a 40 lb bag is moved 60 inches toward the nose (from 120" to 60"), so the moment about the reference decreases by 40 × 60 = 2,400 inch-pounds.

With a total weight of 2,220 lb, the shift in CG is ΔCG = ΔMoment / total weight = -2,400 / 2,220 ≈ -1.08 inches. The negative sign means the CG moves forward (toward the nose).

If the original CG was about 77 inches, subtracting about 1.08 inches gives roughly 75.9 inches, which rounds to about 76 inches. So the new CG is approximately 76 inches.

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