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Dear students ,

Dear students , How are you, we hope that you all are fine especially after this long . long vacation. It is time to work , we try always to offer you the best. Now hoping that you too will do your best to pass this critical period of time & to complete together our success.

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Dear students ,

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  1. Dear students, How are you, we hope that you all are fine especially after this long .long vacation. It is time to work , we try always to offer you the best. Now hoping that you too will do your best to pass this critical period of time & to complete together our success. For better future to our country. Science Department

  2. Science 2nd prep Periodic motion

  3. Typesof motion Transitional motion Periodic motion Has a starting & ending point Repeated in equal intervals of time. EX: motion of a train 0scillatory motion Wave motion

  4. Oscillatory motion • It is made by oscillating body • around its point of rest where • the motion is repeated through • equal intervals of time

  5. N.B. In the vibrational motion the speed of the vibrating body 1- Decrease when it moves away from its original position 2- Increase when it moves towards its original position 3- Becomes maximum at its original position 4- Becomes zero at the furthest point away from its original position

  6. Examples for oscillatory motion

  7. Operation the microwave oven 1- Microwaves make water molecules present inside the cocked food vibrate 2- This forces the molecules to collide with each other 3- That produces a lot of heat energy that helps cooking the food faster

  8. Graphical representation of oscillatory motion

  9. :Concepts related to the oscillatory motion 1- Amplitude. 2- Complete oscillation. 3- Periodic time. .4-Frequency

  10. Amplitude It is the maximum displacement that is done by the vibrating ( Oscillating ) body away From its original position ( Point at rest ) A C

  11. Complete vibration ( cycle ) The vibrating body begins its motion from

  12. 1 = • T f The periodic time It is the time needed by an oscillating body to make complete oscillation • measured in seconds (s) • symbol is T Time in second Periodic time = no of complete vibrations made in that time

  13. The frequency It is the no of complete oscillation that are made by the vibrating body in One second no of complete vibration The frequency = Time in second 1 Frequency X Periodic time =

  14. Thanks for your attention Goodbye

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