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.