Oscillations by Syed Faris Akmal https://padlet.com/syfarisakmal/physicsislife Geng A* utk physics ( dan lain lain) en-us 2020-05-15 03:46:22 UTC 2023-09-23 12:27:39 UTC hello@padlet.com https://media3.giphy.com/media/nnDKoJtJRdl26EXDsD/giphy.gif OSCILLATIONS syfarisakmal https://padlet.com/syfarisakmal/physicsislife/wish/574184632 2020-05-15 03:50:29 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574184632 Free and Forced Oscillation syfarisakmal https://padlet.com/syfarisakmal/physicsislife/wish/574186685 If an oscillator is displaced and then released it will begin to vibrate. If no more external forces are applied to the system it is a free oscillator. If a force is continually or repeatedly applied to keep the oscillation going, it is a forced oscillator.]]> 2020-05-15 03:53:05 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574186685 Simple Harmonic Motion ftnblrsln https://padlet.com/syfarisakmal/physicsislife/wish/574189950 Vibration / oscillation in which there is acceleration towards a fixed point. The magnitude of the acceleration is proportional to the displacement from the point.

Requirement s.h.m
  1. the mass that oscillates
  2. a position where the mass is in equilibrium
  3. a restoring force that acts to return the mass to equilibrium position

]]> 2020-05-15 03:56:51 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574189950 Resonance & Damping korilekla https://padlet.com/syfarisakmal/physicsislife/wish/574191964 Damping: loss of energy and reduction in amplitude from an oscillating system caused by force acting in opposite direction to the motion (e.g. friction)

Resonance: the maximum amplitude of vibration when impressed frequency equals natural frequency of vibration]]> 2020-05-15 03:58:55 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574191964 Equation of s.h.m ftnblrsln https://padlet.com/syfarisakmal/physicsislife/wish/574193661 2020-05-15 04:01:17 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574193661 TYPES OF DAMPING korilekla https://padlet.com/syfarisakmal/physicsislife/wish/574203733 1. Light damping: system oscillates about equilibrium position with decreasing amplitude over a period of time

2. Critical damping: system does not oscillate & is amount of damping required such that the system returns to its equilibrium position in the shortest possible time

3. Heavy damping: damping is so great that the displaced object never oscillates but returns to its equilibrium
position very very slowly]]> 2020-05-15 04:15:15 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574203733 Equation Of Maximum Velocity S.H.M ysminzkria2402 https://padlet.com/syfarisakmal/physicsislife/wish/574203936 2020-05-15 04:15:30 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574203936 Frequency and angular frequency danialnurhakim0853 https://padlet.com/syfarisakmal/physicsislife/wish/574205697 The frequency of s.h.m is equal to the number of oscillations per unit time]]> 2020-05-15 04:17:57 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574205697 Acceleration and Displacement ftnblrsln https://padlet.com/syfarisakmal/physicsislife/wish/574212582 a = -ω2r
  • a ∝ x
  • minus sign shows that when object displaced to right, direction of acceleration is to the left
]]> 2020-05-15 04:27:20 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574212582 Graph Energy at Half Oscillation ysminzkria2402 https://padlet.com/syfarisakmal/physicsislife/wish/574217835 2020-05-15 04:34:43 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574217835 Observing Oscillation syfarisakmal https://padlet.com/syfarisakmal/physicsislife/wish/574223701 2020-05-15 04:43:46 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574223701 Energy Change in s.h.m ftnblrsln https://padlet.com/syfarisakmal/physicsislife/wish/574231164 constant interchange energy between two forms 
  • potential energy - maximum at both ends  of amplitude
  • kinetic energy - at equilibrium, kinetic energy is maximum
total energy remains constant throughout : k.e + p.e has the same value
]]> 2020-05-15 04:55:10 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574231164 Free syfarisakmal https://padlet.com/syfarisakmal/physicsislife/wish/574233032 The free oscillation possesses constant amplitude and period without any external force to set the oscillation. Ideally, free oscillation does not undergo damping. But in all natural systems damping is observed unless and until any constant external force is supplied to overcome damping. In such a system, the amplitude, frequency, and energy all remain constant.


]]> 2020-05-15 04:57:58 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574233032 Forced syfarisakmal https://padlet.com/syfarisakmal/physicsislife/wish/574233251 When a body oscillates by being influenced by an external periodic force, it is called forced oscillation. Here, the amplitude of oscillation, experiences damping but remains constant due to the external energy supplied to the system.For example, when you push someone on a swing, you have to keep periodically pushing them so that the swing doesn’t reduce.

]]> 2020-05-15 04:58:16 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574233251 Example of Free syfarisakmal https://padlet.com/syfarisakmal/physicsislife/wish/574240170 2020-05-15 05:08:54 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574240170 Example of Forced syfarisakmal https://padlet.com/syfarisakmal/physicsislife/wish/574240688 2020-05-15 05:09:37 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574240688 More About Resonance ysminzkria2402 https://padlet.com/syfarisakmal/physicsislife/wish/574242101 -Resonance can increase the amplitude of an oscillation by applying force at just the right frequency]]> 2020-05-15 05:11:29 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574242101 Derivation Of Equation Of Frequency And Period S.H.M ysminzkria2402 https://padlet.com/syfarisakmal/physicsislife/wish/574245602 2020-05-15 05:16:29 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574245602 Equation For Velocity ysminzkria2402 https://padlet.com/syfarisakmal/physicsislife/wish/574250607 2020-05-15 05:23:11 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574250607 Energy and damping ysminzkria2402 https://padlet.com/syfarisakmal/physicsislife/wish/574255597 - if natural frequency of oscillation is equal to forced frequency, damping decreases causing destruction of an object 
- achieved by introducing force of friction into the mechanical system
- for example: destruction af a building]]> 2020-05-15 05:29:50 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574255597 Energy graphs ftnblrsln https://padlet.com/syfarisakmal/physicsislife/wish/574286446 2020-05-15 06:06:43 UTC https://padlet.com/syfarisakmal/physicsislife/wish/574286446 A mass-spring system syfarisakmal https://padlet.com/syfarisakmal/physicsislife/wish/586226881 A trolley loaded with extra masses is tethered by identical springs in between two clamps.
Displace the trolley to one side and it will oscillate back and forth]]> 2020-05-21 03:24:03 UTC https://padlet.com/syfarisakmal/physicsislife/wish/586226881 syfarisakmal https://padlet.com/syfarisakmal/physicsislife/wish/586229359 2020-05-21 03:27:16 UTC https://padlet.com/syfarisakmal/physicsislife/wish/586229359 A loudspeaker cone syfarisakmal https://padlet.com/syfarisakmal/physicsislife/wish/586230471 A signal  generator set to low frequency  drives a loudspeaker cone so that it vibrates.
Use a stroboscope flashing at similar frequency to show up the movement of the cone

]]> 2020-05-21 03:28:41 UTC https://padlet.com/syfarisakmal/physicsislife/wish/586230471 syfarisakmal https://padlet.com/syfarisakmal/physicsislife/wish/586233415 2020-05-21 03:32:30 UTC https://padlet.com/syfarisakmal/physicsislife/wish/586233415 Describing Oscillation syfarisakmal https://padlet.com/syfarisakmal/physicsislife/wish/586234421 Displacement-distance of the object from an equilibrium point
Amplitude- maximum displacement of an oscillating object
Period-time taken for a single oscillation
Frequency-number of oscillation per second

]]> 2020-05-21 03:33:58 UTC https://padlet.com/syfarisakmal/physicsislife/wish/586234421 syfarisakmal https://padlet.com/syfarisakmal/physicsislife/wish/586237827 2020-05-21 03:38:01 UTC https://padlet.com/syfarisakmal/physicsislife/wish/586237827 Big Ideas in Physics ftnblrsln https://padlet.com/syfarisakmal/physicsislife/wish/586544745
  • Physicists often take a complex problem and reduce it to a simpler, more manageable problem. This is simpler because we know that the spring obeys Hooke’s law, so that force is proportional to displacement.
  • The equation a = −ω2x which describes s.h.m. can be solved to give the sine and cosine equations we have considered above.
  • Once physicists have solved one problem like this, they look around for other situations where they can use the same
    ideas all over again. So the mass–spring theory also works well for vibrating atoms and molecules, for objects bobbing up and down in water, and in many other situations.
  • Physicists also seek to modify the theory to fit a greater
    range of situations. For example, what happens if the
    vibrating mass experiences a frictional force as it oscillates?
    (This is damping, as discussed above.)
    • ]]>     2020-05-21 08:40:49 UTC https://padlet.com/syfarisakmal/physicsislife/wish/586544745     Examples of s.h.m ftnblrsln https://padlet.com/syfarisakmal/physicsislife/wish/586560052 2020-05-21 08:51:44 UTC https://padlet.com/syfarisakmal/physicsislife/wish/586560052 ftnblrsln https://padlet.com/syfarisakmal/physicsislife/wish/586564545 2020-05-21 08:54:53 UTC https://padlet.com/syfarisakmal/physicsislife/wish/586564545 ftnblrsln https://padlet.com/syfarisakmal/physicsislife/wish/586566901 2020-05-21 08:56:30 UTC https://padlet.com/syfarisakmal/physicsislife/wish/586566901 ftnblrsln https://padlet.com/syfarisakmal/physicsislife/wish/586569916 2020-05-21 08:58:28 UTC https://padlet.com/syfarisakmal/physicsislife/wish/586569916 Formula danialnurhakim0853 https://padlet.com/syfarisakmal/physicsislife/wish/587142833 2020-05-21 14:54:50 UTC https://padlet.com/syfarisakmal/physicsislife/wish/587142833