Object: A car rounding a bend on a flat road
Circular Motion: The car's path is curved, tracing a portion of a circle.
Source of Centripetal Force: Friction between the tires and the road. The friction force acts towards the center of the circle, preventing the car from moving in a straight line and forcing it to follow the curved path.
Object: A satellite orbiting Earth
Circular Motion: The satellite's path around Earth is approximately circular.
Source of Centripetal Force: Gravity between the satellite and Earth. The gravitational force exerted by Earth on the satellite acts towards the center of Earth, constantly pulling the satellite towards it and keeping it in its circular orbit.