![]() In other words, while the direction of the velocity is changing, it’s magnitude is constant. In uniform circular motion, the ‘speed’ of the particle is constant. With that, let’s start with types of circular motion for which you might want to carefully examine the video and carefully look at the involved forces and accelerations Towards the end we will look at the simple harmonic motion of the $x$ and $y$ projections of the particle in uniform circular motion Then we will get into the kinematics of the circular motion, where we will talk about the centripetal and tangential accelerations (Note: in uniform circular motion we only have centripetal acceleration), and we will also touch upon ways to determine average acceleration or average velocity over a given duration of interest.Īfterwards, we will deep dive into uniform circular motion and we will study horizontal circular motion, conical pendulum moving in a circle, circular motion of a car on a level road, circular motion of a car on a banked road and circular motion at constant speed in vertical plane.Īnd then we will jump into non-uniform circular motion and examine non-uniform circular motion in horizontal plane, accelerated circular motion of a car on a level road, and non-uniform motion in a vertical plane Following which we will quickly dive into difference between circular motion (of a particle) and rotational motion (of a rigid body, where in different particles of the rigid body may be in circular motion moving at different speeds). To learn more about how we help parents and students in Marina visit: Tutoring in Marina.Let’s explore circular motion! And we will begin with a brief understanding of types of circular motion (uniform and non-uniform circular motion). We offer tutoring programs for students in K-12, AP classes, including physics and college. ![]() SchoolTutoring Academy is the premier educational services company for K-12 and college students. It is only experience in the context of circular motion. If a centrifugal force were acting the stone would fly away while whirling. There is a misconception that an object moving in a circle has an outward force acting on it called centrifugal force. While whirling stone tied with a string the stone exerts the outward force, centrifugal reaction, on the hand.Ĭentrifugal force is a fictitious force due to inertia of rotational motion. In the stone tied to a string and whirl around the tension in the string provides the centripetal force.Īccording to Newton’s third law of motion, the agent which exerts centripetal force is subjected to centrifugal reaction which is equal and opposite to centripetal force and directed away from the center of the circular path. The force acting on a body of mass m moving with a constant speed v along a circular path of radius r is given as: The direction of the force changes continuously. Therefore, centripetal force acting on a body in circular motion may be defined as the radial force directed towards the center. The force which causes this acceleration is called the centripetal force. This acceleration is called the centripetal acceleration or radial acceleration. This acceleration is directed towards the center. There is a continuous change in direction in uniform circular motion due to which there is acceleration that is perpendicular to the path because of uniform speed. The acceleration due to change in direction is: ![]() The angle swept out in time t is give as: The speed of the object in the circular path is: ![]() If the period for one rotation is T, the angular velocity ω (omega) is: The circumference of a circle path of radius r is 2πr. Moon revolves around the earth and the earth revolves around the sun. Motion along a circular with constant speed is called uniform circular motion.Įxamples of circular motion include: a stone tied to one end of a string and is revolved uniformly. The object in circular motion moves along the circumference of a circle. Circular motion is a movement of an object along a circular path or a circular orbit. A body which does not move is said to be at rest, motionless, or stationary. An object is said to be in motion if it changes its position with time. ![]()
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