The two primary forces acting upon a floating boat that affect stability are

The two primary forces acting upon a floating boat that affect stability are

• A. GRAVITY AND BUOYANCY
• B. MASS AND DRAG
• C. FORCE AND MOMENT
• D. THERMAL EXPANSION AND CONDUCTION

Answer: (A)

Stability of a floating boat comes from the balance between gravity pulling downward and buoyancy pushing upward. Gravity acts through the boat’s center of gravity, while buoyancy acts through the center of buoyancy—the centroid of the displaced water. When the boat tilts, the center of buoyancy shifts to provide a restoring or overturning moment. If the metacenter stays above the center of gravity, small tilts tend to right the vessel, making it stable. If not, the boat can capsize. So the two forces that determine stability are gravity and buoyancy. Other forces like drag or heat transfer aren’t the primary factors setting static stability.

Stability of a floating boat comes from the balance between gravity pulling downward and buoyancy pushing upward. Gravity acts through the boat’s center of gravity, while buoyancy acts through the center of buoyancy—the centroid of the displaced water. When the boat tilts, the center of buoyancy shifts to provide a restoring or overturning moment. If the metacenter stays above the center of gravity, small tilts tend to right the vessel, making it stable. If not, the boat can capsize. So the two forces that determine stability are gravity and buoyancy. Other forces like drag or heat transfer aren’t the primary factors setting static stability.