In a periodic motion, the object repeats itself after
a) very small period of time
b) very large period of time
c) same period of time
d) all of these
Q12. OPTIONS:
A B
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Answer:
Explanation: Motion that repeats itself regularly is called periodic motion. One complete repetition of the motion is called a cycle. The duration of each cycle is the period.
The frequency refers to the number of cycles completed in an interval of time. It is the reciprocal of the period and can be calculated with the equation f=1/T.
Some motion is best characterized by the angular frequency (ω). The angular frequency refers to the angular displacement per unit time and is calculated from the frequency with the equation ω=2πf.
Key Terms
period: The duration of one cycle in a repeating event.
angular frequency: The angular displacement per unit time.
frequency: The quotient of the number of times n a periodic phenomenon occurs over the time t in which it occurs: f = n / t.
Answer:
A motion is said to be periodic when it repeats its motion after a particular period of time.If motion repeats after same period of time then it is a periodic motion.