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Short answer type questions, (a) What is an oscillation?(b) Define time period of a pendulum.​

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tion:Oscillation is the repetitive variation, typically in time, of some measure about a central value or between two or more different states. The term vibration is precisely used to describe mechanical oscillation. Familiar EXAMPLES of oscillation include a SWINGING pendulum and alternating current. A pendulum is a weight suspended from a pivot so that it can swing freely. ... The time for one complete cycle, a left swing and a right swing, is called the period. The period DEPENDS on the length of the pendulum and also to a SLIGHT DEGREE on the amplitude, the width of the pendulum's swing.



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