What is the role of centripetal force?

The role of centripetal force is to act as the net force that keeps an object moving in a circular path, directing that force toward the center of the circle. This is crucial because circular motion requires a continuous change in direction, which means there must be an inward force acting on the object to maintain its curved trajectory. Without this centripetal force, the object would no longer follow the circular path and would instead move off in a straight line due to inertia.

For example, when a car turns around a bend, the friction between the tires and the road provides the necessary centripetal force that allows the car to maintain its curved path. If the force is insufficient (like on a slippery road), the car may skid and depart from the circle.

Understanding centripetal force is essential in various engineering and physics applications, from designing roads to analyzing orbits in space.