In circular motion, an object's inertia tends to keep it moving in a straight line. However, the force acting on the object (such as gravity or tension in a string) causes it to move in a curved path.

Newton's Second Law:

The force required to keep an object in circular motion is directly proportional to the object's mass and the square of its velocity, and inversely proportional to the radius of the circular path. This relationship is expressed by the equation F = mv²/r, where F is the force, m is the mass, v is the velocity, and r is the radius.

Newton's Third Law:

For every action, there is an equal and opposite reaction. In circular motion, the force acting on the object (such as gravity or tension in a string) is equal in magnitude but opposite in direction to the force exerted by the object on its center of rotation.