1. Change in Direction Only:
* The force does not directly change the object's speed.
* Instead, the force acts to change the direction of the object's velocity. This means the object will move in a curved path.
2. Uniform Circular Motion (if the force is constant):
* If the magnitude of the force remains constant and the force always acts perpendicular to the velocity, the object will move in a circular path. This is known as uniform circular motion.
* The force in this case is called the centripetal force. It acts towards the center of the circle and keeps the object from moving in a straight line.
3. Examples:
* A satellite orbiting Earth: Gravity acts as the centripetal force, pulling the satellite towards the Earth. This force is perpendicular to the satellite's velocity, causing it to orbit in a circle.
* A ball on a string: The tension in the string acts as the centripetal force, keeping the ball moving in a circle. The tension is perpendicular to the ball's velocity.
* A car turning on a curve: The force of friction between the tires and the road acts as the centripetal force, allowing the car to turn. This force is perpendicular to the car's velocity.
Key Points to Remember:
* The force does not change the object's speed directly.
* The force only changes the direction of the object's velocity.
* The force is always perpendicular to the object's velocity.
* If the force is constant, the object will move in a circular path (uniform circular motion).
