"Radial motion" redirects here. Not to be confused with radial velocity or rotational speed.
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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 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...
In physics, circularmotion is a movement of an object along the circumference of a circle or rotation along a circular arc. It can be uniform, with a...
changes its motion vector. The acceleration of the vehicle in its current direction of motion is called a linear (or tangential during circular motions)...
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...
of the rotation. During one period, T {\displaystyle T} , a body in circularmotion travels a distance v T {\displaystyle vT} . This distance is also equal...
period of oscillation. Simple harmonic motion can be considered the one-dimensional projection of uniform circularmotion. If an object moves with angular speed...
interaction between objects at the macroscopic scale, and it determines the motion of planets, stars, galaxies, and even light. On Earth, gravity gives weight...
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...
Tangential speed is the speed of an object undergoing circularmotion, i.e., moving along a circular path. A point on the outside edge of a merry-go-round...
differential equation. A unique solution is impossible in the case of circularmotion about the center of force. The shape of an orbit is often conveniently...
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...
lengthy description of these clocks, along with matters pertaining to circularmotion and centrifugal force, as it might be called, a subject about which...
rectilinear motion] Reciprocal motion Brownian motion (i.e. the random movement of particles) Circularmotion Rotatory motion – a motion about a fixed point. (e...
Biarc Circle of a sphere Circular-arc graph Circular interpolation Lemon (geometry) Meridian arc Circumference Circularmotion Tangential speed Wikimedia...
can be used to convert into reciprocating motion, or conversely turn reciprocating motion into circularmotion.[citation needed] For example, inside an...
Linear motion, also called rectilinear motion, is one-dimensional motion along a straight line, and can therefore be described mathematically using only...
When a body rotates about its axis, the motion cannot simply be analyzed as a particle, as in circularmotion it undergoes a changing velocity and acceleration...
opposed to the angular position of a line, or line segment (e.g., in circularmotion, the "radius" joining the rotating point with the center of rotation)...
only in the rotating frame), and the motion is an inertial circle. Analysis and observation of circularmotion in the rotating frame is a simplification...
Benedetti cites the motion of a rock in a sling as an example of the inherent linear motion of objects, forced into circularmotion. According to Charles...
physics and mathematics, developed in classical mechanics, that describes the motion of points, bodies (objects), and systems of bodies (groups of objects) without...
speed. This simple analysis can also apply to non-circularmotion if one uses the component of the motion perpendicular to the radius vector: L = r m v ⊥...
direction of the centripetal force. In the case of a ball held in circularmotion by a string, the centripetal force is the force exerted by the string...