circular motion

Topics: Oscillation, Rotation, Angular momentum Pages: 2 (690 words) Published: February 24, 2014
Translational motion
Translational motion is the aspect in which a body moves from a specific point to the next. This can be in terms of objects, molecules or atoms. This kind of motion normally takes place in a straight line for instance bullet which is fired by a gun. The object in motion does not change by turning on its axis for it travels in a straight line. Any slight change or rotation can cause the object to change direction in general making it not move toward the specified direction. Eg: ball thrown by a man in a straight line.

Circular motion 
Circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform, with constant angular rate of rotation (and constant speed), or non-uniform with a changing rate of rotation. The rotation around a fixed axis of a three-dimensional body involves circular motion of its parts. Examples of circular motion include: an artificial satellite orbiting the Earth at constant height, a stone which 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.

Periodic motion
An object is said to undergo periodic motion when after some set amount of time it returns to its starting point and begins to repeat its motion or a recurrent motion in which the intervals of time required to complete each cycle are equal. Periodic motion is performed, for example, by a rocking chair, a bouncing ball, a vibrating tuning fork, a swing in motion, the Earth in its orbit around the Sun, and a water wave. In each case the interval of time for a repetition, or cycle, of the motion is called a period. Eg: motion of pendulum.

Periodic motion

Oscillation is the repetitive variation, typically in time, of some measure about a central value (often a point...
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