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Damping - Physics Coursework Help!

I need theory on damping and its effects on the swing and the decay of a pendulums swing, I know what damping is but i cant find any info on damping...like equations and stuff...i know it sounds a bit stupid but i need it for my coursework...
Any help is appreciated! :smile:

Reply 1

dom321

there wasnt any equations in my sylabus, what board are you?

i just rember all the graphs and stuff, its to do with reducing energy isnt it, which reduces the speed, accelleration etc

Reply 2

bigmo7

yh there arent any eqns...i just dont know how to show it...or going thru the theory of it...

Btw im on OCR

Reply 3

dom321

ye i did ocr A like, the theory would be discussing the graphs and relating it to energy then i guess

Reply 4

eulerwaswrong

im doing the exact same coursework - but im not sharing any of it on here anywho.

Have you done M2/M3/M4 maths modules by the way? If you have theres lots of stuff you can use from those.

Just go into google and type in dampened simple harmonic motion/suspension systems/ or whatever and you will have many university help pages - i found an exact plan and help sheet for one of the pracs im doing for it -

Reply 5

teachercol

The amplitude should decay exponentially

Reply 6

jackbourne

The amplitude decreases exponentially due to the solution of the differential equation (if you dont do maths, dont worry about this fact) just worry about the the coefficients
eg A=Aoe^(-kt) concentrate on k as Ao is the original amplitude eg what height you raised it to.
arrange to get lnA = lnAo - kt the compare with y = c +mx where c is ln Ao and m is -k
I am doing damping in LC circuits. :biggrin: