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WEEK 9
TOPIC: SIMPLE HARMONIC MOTION
CONTENT
- CONCEPT of S.H.M
- Example of bodies in S.H.M
- Mathematical description of SHM
- Terms used in describing SHM
- Energy conversion in SHM
- Damped oscillation
- Forced vibration in SHM
- Resonance
PERIOD ONE
CONCEPT OF SHM
Simple harmonic motion is an example of periodic motion. A periodic motion is one whose pattern of motion is repeated at regular interval of time.
A body is said to be in Simple Harmonic Motion if it moves along a fixed path such that it acceleration is directly proportional to its displacement from a fixed point and it is also directed toward that fixed point.
Simple harmonic motion can be defined as the motion of a body whose acceleration is always directed towards a fixed point and is proportional to the displacement of the bodies from that point.
Example of bodies in SHM
- A vibrating simple pendulum
- A mass at the ended of a vibrating helical spring
- Oscillation of mercury in a U-tube
- Motion of the balance wheel of a watch.
- Motion of prongs of a vibrating tuning fork
- Motion of a loaded test tube in water
Mathematical definition of SHM
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