The concept and examples of the oscillatory motion
The periodic motion
The periodic motion is a motion which is regularly repeated in equal periods of time , The oscillatory motion and the wave motion are examples of the periodic motion .
The oscillatory motion
The oscillatory motion is the motion of the oscillating body around its rest point , where the motion is repeated through the equal intervals of the time .
Examples of the oscillatory motion
- The clock , The tuning fork , The spring , The stretched string , The motion of the swing , The rotary bee .
- The movement of the Earth’s crust during the earthquakes .
- The movement of the atoms in the molecules .
Some concepts related to the oscillatory motion
The amplitude : You should know that the amplitude is the maximum displacement done by the oscillating body away from its original position . The measuring unit of the amplitude is metre or centimetre .
The complete oscillation : It is very important to know that the complete oscillation is the motion of an oscillating body when it passes by a fixed point on its path two successive times in the same direction .
The periodic time : You should know that the periodic time is the time taken by an oscillating body to make one complete oscillation , The measuring unit of the periodic time is the second .
The frequency : It is very important to know that the frequency is the number of the complete oscillations made by an oscillating body in one second , The relation between the periodic time and the frequency is an inverse relation .