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Circular motion information


In physics, circular motion is a movement of an object along the circumference of a circle or rotation along a circular arc. It can be uniform, with a constant rate of rotation and constant tangential speed, or non-uniform with a changing rate of rotation. The rotation around a fixed axis of a three-dimensional body involves the circular motion of its parts. The equations of motion describe the movement of the center of mass of a body, which remains at a constant distance from the axis of rotation. In circular motion, the distance between the body and a fixed point on its surface remains the same, i.e., the body is assumed rigid.

Examples of circular motion include: special satellite orbits around the Earth (circular orbits), a ceiling fan's blades rotating around a hub, a stone that is tied to a rope and is being swung in circles, a car turning through a curve in a race track, an electron moving perpendicular to a uniform magnetic field, and a gear turning inside a mechanism.

Since the object's velocity vector is constantly changing direction, the moving object is undergoing acceleration by a centripetal force in the direction of the center of rotation. Without this acceleration, the object would move in a straight line, according to Newton's laws of motion...

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Circular motion

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In physics, circular motion is a movement of an object along the circumference of a circle or rotation along a circular arc. It can be uniform, with a...

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Acceleration

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changes its motion vector. The acceleration of the vehicle in its current direction of motion is called a linear (or tangential during circular motions)...

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Centripetal force

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along a circular path. The centripetal force is directed at right angles to the motion and also along the radius towards the centre of the circular path...

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Angular frequency

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of the rotation. During one period, T {\displaystyle T} , a body in circular motion travels a distance v T {\displaystyle vT} . This distance is also equal...

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Simple harmonic motion

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period of oscillation. Simple harmonic motion can be considered the one-dimensional projection of uniform circular motion. If an object moves with angular speed...

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Gravity

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interaction between objects at the macroscopic scale, and it determines the motion of planets, stars, galaxies, and even light. On Earth, gravity gives weight...

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Rotation

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Rotation or rotational motion is the circular movement of an object around a central line, known as axis of rotation. A plane figure can rotate in either...

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Tangential speed

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Tangential speed is the speed of an object undergoing circular motion, i.e., moving along a circular path. A point on the outside edge of a merry-go-round...

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Binet equation

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differential equation. A unique solution is impossible in the case of circular motion about the center of force. The shape of an orbit is often conveniently...

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Relativistic Doppler effect

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in frequency, wavelength and amplitude of light, caused by the relative motion of the source and the observer (as in the classical Doppler effect), when...

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Time derivative

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price level itself. Differential calculus Notation for differentiation Circular motion Centripetal force Spatial derivative Temporal rate Chiang, Alpha C...

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Centrifugal force

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lengthy description of these clocks, along with matters pertaining to circular motion and centrifugal force, as it might be called, a subject about which...

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Motion

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rectilinear motion] Reciprocal motion Brownian motion (i.e. the random movement of particles) Circular motion Rotatory motion – a motion about a fixed point. (e...

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Circular arc

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Biarc Circle of a sphere Circular-arc graph Circular interpolation Lemon (geometry) Meridian arc Circumference Circular motion Tangential speed Wikimedia...

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Reciprocating motion

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can be used to convert into reciprocating motion, or conversely turn reciprocating motion into circular motion.[citation needed] For example, inside an...

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Linear motion

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Linear motion, also called rectilinear motion, is one-dimensional motion along a straight line, and can therefore be described mathematically using only...

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Angular velocity

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same direction as the rotation of Earth). In the simplest case of circular motion at radius r {\displaystyle r} , with position given by the angular...

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Angular displacement

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When a body rotates about its axis, the motion cannot simply be analyzed as a particle, as in circular motion it undergoes a changing velocity and acceleration...

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Rigid body

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opposed to the angular position of a line, or line segment (e.g., in circular motion, the "radius" joining the rotating point with the center of rotation)...

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Fictitious force

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Newton's laws of motion Non-inertial reference frame Orthogonal coordinates Rotating reference frame Statics Uniform circular motion Physics portal "What...

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Coriolis force

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only in the rotating frame), and the motion is an inertial circle. Analysis and observation of circular motion in the rotating frame is a simplification...

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Inertia

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Benedetti cites the motion of a rock in a sling as an example of the inherent linear motion of objects, forced into circular motion. According to Charles...

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Kinematics

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physics and mathematics, developed in classical mechanics, that describes the motion of points, bodies (objects), and systems of bodies (groups of objects) without...

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Angular momentum

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speed. This simple analysis can also apply to non-circular motion if one uses the component of the motion perpendicular to the radius vector: L = r m v ⊥...

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Reactive centrifugal force

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direction of the centripetal force. In the case of a ball held in circular motion by a string, the centripetal force is the force exerted by the string...

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