Centrifugal force is the

Centrifugal force is the

• A. The force that makes water flow to accelerate away from center of rotation
• B. The force that attracts water toward the center
• C. The force that acts only on solids
• D. The force that slows rotation of objects

Answer: (A)

In a rotating frame, objects feel an apparent outward push called centrifugal force. Water in a spinning container wants to move in a straight line, but the walls force its path to curve, so from the perspective inside the rotating system it appears as if the water is being pushed outward toward the rim. This outward tendency increases with rotation speed, which is why water seems to flow away from the center. It’s important to recognize this as an apparent force in a non-inertial frame; the actual inward force that keeps the water following a circular path is centripetal, provided by the container. Since the outward push describes how the water behaves in rotation, that option best captures the concept. The other ideas describe inward attraction (centripetal), apply to solids and fluids, or imply rotation would be slowed by this force, none of which fit the described outward effect.

In a rotating frame, objects feel an apparent outward push called centrifugal force. Water in a spinning container wants to move in a straight line, but the walls force its path to curve, so from the perspective inside the rotating system it appears as if the water is being pushed outward toward the rim. This outward tendency increases with rotation speed, which is why water seems to flow away from the center. It’s important to recognize this as an apparent force in a non-inertial frame; the actual inward force that keeps the water following a circular path is centripetal, provided by the container. Since the outward push describes how the water behaves in rotation, that option best captures the concept. The other ideas describe inward attraction (centripetal), apply to solids and fluids, or imply rotation would be slowed by this force, none of which fit the described outward effect.