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Centripetal Force

Definition

Centripetal force is a force that acts towards the center of a circular path, keeping an object moving in a curved trajectory. It is responsible for maintaining the object's direction and preventing it from veering off.

Analogy

Imagine you're riding a roller coaster and as you approach a sharp turn, you feel pulled towards the inside of the curve. This inward pull that keeps you on track is similar to centripetal force.

Related terms

Gravity: The force that attracts objects towards each other. It can act as a centripetal force when an object orbits around another due to gravitational pull.

Tension: The pulling force exerted by a string or rope when it's attached to an object and spun around in a circular motion. Tension acts as a centripetal force.

Friction: The resistance encountered when two surfaces come into contact with each other. In certain situations, friction can provide the necessary centripetal force to keep an object moving along its curved path.

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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.