Final answer:
Centripetal force examples include the tension in a tetherball and Earth's gravity on a satellite. Centrifugal force is a perceived effect in a rotating frame. Centripetal force is required for any object in uniform circular motion and can be provided by tension, gravity, or friction.
Step-by-step explanation:
An example of centripetal force would be a tetherball swinging in a circle, where the tension in the rope provides the necessary force to keep the ball moving in a circular path. Another example is a satellite orbiting the Earth, with the gravitational force acting as the centripetal force to maintain its orbit. As for centrifugal force, this is often a perceived force and is not a real force acting on an object. For instance, water spinning down a drain or an ice skater spinning on ice are examples where centrifugal effects might be felt by the objects in a rotating reference frame. However, in an inertial frame of reference, these effects are explained by the tendency of objects to continue in straight-line motion due to inertia, while they are in fact subjected to a centripetal force.
According to Newton's second law, any net force causing uniform circular motion is known as a centripetal force, directed toward the center of the circle. In the context of centripetal acceleration, any force such as tension, gravitational force, or friction can act as a centripetal force. When in circular motion, the object requires a centripetal force to alter its direction continually, keeping it moving along a circular path.