Home » Archimedes archive » Acorn User » AU 1997-01 B.adf » Regulars » StarInfo/Allen/!Ignotum/Formulae/Formulae/Osci

StarInfo/Allen/!Ignotum/Formulae/Formulae/Osci

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

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# Physics > Oscillations

# New entries should take the form of:
#     Formula
#     Note 1
#     Note 2
#     Note 3
#     Note 4
#     Note 5
#     Formula
#     Note 1
#     And so on...
# To fit snugly into the window, each line should be no longer
# than 42 characters.
# There is a limit of 25 formulas per topic.

# Any notes should be made here, at the beginning and should
# be preceeded by a hash (#).

a=-ks/m
For simple harmonic motion, where:
a=acceleration
k='spring' constant
m=mass of object
s=displacement from equilibrium position
s=Acos(wt)
For simple harmonic motion, where:
s=displacement from equilibrium position
A=amplitude of movement
w=angular velocity
t=time
w�=k/m
For simple harmonic motion, where:
w=angular velocity
k='spring' constant
m=mass of object

T=2PI/w
For simple harmonic motion, where:
T=time for one period
PI=3.141592654
w=angular velocity

T=2PI(m/k)^�
For simple harmonic motion, where:
T=time for one period
PI=3.141592654
m=mass of object
k='spring' constant
f=1/T
For simple harmonic motion, where:
f=frequency of oscillation
T=time for one period


f=w/2PI
For simple harmonic motion, where:
f=frequency of oscillation
w=angular velocity
PI=3.141592654

f=((k/m)^�)/2PI
For simple harmonic motion, where:
f=frequency of oscillation
k='spring' constant
m=mass of object
PI=3.141592654
vmax=wA
For simple harmonic motion, where:
vmax=maximum velocity
w=angular velocity
A=amplitude of oscillation

amax=w�A
For simple harmonic motion, where:
amax=maximum acceleration
w=angular velocity
A=amplitude of oscillation

KE=�mv�
Where:
KE=kinetic energy of oscillator
m=mass of oscillator
v=velocity of oscillator

PE=�ks�
For simple harmonic motion, where:
PE=potential energy of oscillator
k='spring' constant
s=displacement of oscillator from the
equilibrium position
E=�kA�
For simple harmonic motion, where:
E=total energy of oscillator
k='spring' constant
A=amplitude of oscillation

Q=2PI(ES/EL)
Where:
Q=quality factor of oscillator
PI=3.141592654
ES=energy stored in oscillator
EL=energy lost per oscillation


































































00000000  23 20 50 68 79 73 69 63  73 20 3e 20 4f 73 63 69  |# Physics > Osci|
00000010  6c 6c 61 74 69 6f 6e 73  0a 0a 23 20 4e 65 77 20  |llations..# New |
00000020  65 6e 74 72 69 65 73 20  73 68 6f 75 6c 64 20 74  |entries should t|
00000030  61 6b 65 20 74 68 65 20  66 6f 72 6d 20 6f 66 3a  |ake the form of:|
00000040  0a 23 20 20 20 20 20 46  6f 72 6d 75 6c 61 0a 23  |.#     Formula.#|
00000050  20 20 20 20 20 4e 6f 74  65 20 31 0a 23 20 20 20  |     Note 1.#   |
00000060  20 20 4e 6f 74 65 20 32  0a 23 20 20 20 20 20 4e  |  Note 2.#     N|
00000070  6f 74 65 20 33 0a 23 20  20 20 20 20 4e 6f 74 65  |ote 3.#     Note|
00000080  20 34 0a 23 20 20 20 20  20 4e 6f 74 65 20 35 0a  | 4.#     Note 5.|
00000090  23 20 20 20 20 20 46 6f  72 6d 75 6c 61 0a 23 20  |#     Formula.# |
000000a0  20 20 20 20 4e 6f 74 65  20 31 0a 23 20 20 20 20  |    Note 1.#    |
000000b0  20 41 6e 64 20 73 6f 20  6f 6e 2e 2e 2e 0a 23 20  | And so on....# |
000000c0  54 6f 20 66 69 74 20 73  6e 75 67 6c 79 20 69 6e  |To fit snugly in|
000000d0  74 6f 20 74 68 65 20 77  69 6e 64 6f 77 2c 20 65  |to the window, e|
000000e0  61 63 68 20 6c 69 6e 65  20 73 68 6f 75 6c 64 20  |ach line should |
000000f0  62 65 20 6e 6f 20 6c 6f  6e 67 65 72 0a 23 20 74  |be no longer.# t|
00000100  68 61 6e 20 34 32 20 63  68 61 72 61 63 74 65 72  |han 42 character|
00000110  73 2e 0a 23 20 54 68 65  72 65 20 69 73 20 61 20  |s..# There is a |
00000120  6c 69 6d 69 74 20 6f 66  20 32 35 20 66 6f 72 6d  |limit of 25 form|
00000130  75 6c 61 73 20 70 65 72  20 74 6f 70 69 63 2e 0a  |ulas per topic..|
00000140  0a 23 20 41 6e 79 20 6e  6f 74 65 73 20 73 68 6f  |.# Any notes sho|
00000150  75 6c 64 20 62 65 20 6d  61 64 65 20 68 65 72 65  |uld be made here|
00000160  2c 20 61 74 20 74 68 65  20 62 65 67 69 6e 6e 69  |, at the beginni|
00000170  6e 67 20 61 6e 64 20 73  68 6f 75 6c 64 0a 23 20  |ng and should.# |
00000180  62 65 20 70 72 65 63 65  65 64 65 64 20 62 79 20  |be preceeded by |
00000190  61 20 68 61 73 68 20 28  23 29 2e 0a 0a 61 3d 2d  |a hash (#)...a=-|
000001a0  6b 73 2f 6d 0a 46 6f 72  20 73 69 6d 70 6c 65 20  |ks/m.For simple |
000001b0  68 61 72 6d 6f 6e 69 63  20 6d 6f 74 69 6f 6e 2c  |harmonic motion,|
000001c0  20 77 68 65 72 65 3a 0a  61 3d 61 63 63 65 6c 65  | where:.a=accele|
000001d0  72 61 74 69 6f 6e 0a 6b  3d 27 73 70 72 69 6e 67  |ration.k='spring|
000001e0  27 20 63 6f 6e 73 74 61  6e 74 0a 6d 3d 6d 61 73  |' constant.m=mas|
000001f0  73 20 6f 66 20 6f 62 6a  65 63 74 0a 73 3d 64 69  |s of object.s=di|
00000200  73 70 6c 61 63 65 6d 65  6e 74 20 66 72 6f 6d 20  |splacement from |
00000210  65 71 75 69 6c 69 62 72  69 75 6d 20 70 6f 73 69  |equilibrium posi|
00000220  74 69 6f 6e 0a 73 3d 41  63 6f 73 28 77 74 29 0a  |tion.s=Acos(wt).|
00000230  46 6f 72 20 73 69 6d 70  6c 65 20 68 61 72 6d 6f  |For simple harmo|
00000240  6e 69 63 20 6d 6f 74 69  6f 6e 2c 20 77 68 65 72  |nic motion, wher|
00000250  65 3a 0a 73 3d 64 69 73  70 6c 61 63 65 6d 65 6e  |e:.s=displacemen|
00000260  74 20 66 72 6f 6d 20 65  71 75 69 6c 69 62 72 69  |t from equilibri|
00000270  75 6d 20 70 6f 73 69 74  69 6f 6e 0a 41 3d 61 6d  |um position.A=am|
00000280  70 6c 69 74 75 64 65 20  6f 66 20 6d 6f 76 65 6d  |plitude of movem|
00000290  65 6e 74 0a 77 3d 61 6e  67 75 6c 61 72 20 76 65  |ent.w=angular ve|
000002a0  6c 6f 63 69 74 79 0a 74  3d 74 69 6d 65 0a 77 b2  |locity.t=time.w.|
000002b0  3d 6b 2f 6d 0a 46 6f 72  20 73 69 6d 70 6c 65 20  |=k/m.For simple |
000002c0  68 61 72 6d 6f 6e 69 63  20 6d 6f 74 69 6f 6e 2c  |harmonic motion,|
000002d0  20 77 68 65 72 65 3a 0a  77 3d 61 6e 67 75 6c 61  | where:.w=angula|
000002e0  72 20 76 65 6c 6f 63 69  74 79 0a 6b 3d 27 73 70  |r velocity.k='sp|
000002f0  72 69 6e 67 27 20 63 6f  6e 73 74 61 6e 74 0a 6d  |ring' constant.m|
00000300  3d 6d 61 73 73 20 6f 66  20 6f 62 6a 65 63 74 0a  |=mass of object.|
00000310  0a 54 3d 32 50 49 2f 77  0a 46 6f 72 20 73 69 6d  |.T=2PI/w.For sim|
00000320  70 6c 65 20 68 61 72 6d  6f 6e 69 63 20 6d 6f 74  |ple harmonic mot|
00000330  69 6f 6e 2c 20 77 68 65  72 65 3a 0a 54 3d 74 69  |ion, where:.T=ti|
00000340  6d 65 20 66 6f 72 20 6f  6e 65 20 70 65 72 69 6f  |me for one perio|
00000350  64 0a 50 49 3d 33 2e 31  34 31 35 39 32 36 35 34  |d.PI=3.141592654|
00000360  0a 77 3d 61 6e 67 75 6c  61 72 20 76 65 6c 6f 63  |.w=angular veloc|
00000370  69 74 79 0a 0a 54 3d 32  50 49 28 6d 2f 6b 29 5e  |ity..T=2PI(m/k)^|
00000380  bd 0a 46 6f 72 20 73 69  6d 70 6c 65 20 68 61 72  |..For simple har|
00000390  6d 6f 6e 69 63 20 6d 6f  74 69 6f 6e 2c 20 77 68  |monic motion, wh|
000003a0  65 72 65 3a 0a 54 3d 74  69 6d 65 20 66 6f 72 20  |ere:.T=time for |
000003b0  6f 6e 65 20 70 65 72 69  6f 64 0a 50 49 3d 33 2e  |one period.PI=3.|
000003c0  31 34 31 35 39 32 36 35  34 0a 6d 3d 6d 61 73 73  |141592654.m=mass|
000003d0  20 6f 66 20 6f 62 6a 65  63 74 0a 6b 3d 27 73 70  | of object.k='sp|
000003e0  72 69 6e 67 27 20 63 6f  6e 73 74 61 6e 74 0a 66  |ring' constant.f|
000003f0  3d 31 2f 54 0a 46 6f 72  20 73 69 6d 70 6c 65 20  |=1/T.For simple |
00000400  68 61 72 6d 6f 6e 69 63  20 6d 6f 74 69 6f 6e 2c  |harmonic motion,|
00000410  20 77 68 65 72 65 3a 0a  66 3d 66 72 65 71 75 65  | where:.f=freque|
00000420  6e 63 79 20 6f 66 20 6f  73 63 69 6c 6c 61 74 69  |ncy of oscillati|
00000430  6f 6e 0a 54 3d 74 69 6d  65 20 66 6f 72 20 6f 6e  |on.T=time for on|
00000440  65 20 70 65 72 69 6f 64  0a 0a 0a 66 3d 77 2f 32  |e period...f=w/2|
00000450  50 49 0a 46 6f 72 20 73  69 6d 70 6c 65 20 68 61  |PI.For simple ha|
00000460  72 6d 6f 6e 69 63 20 6d  6f 74 69 6f 6e 2c 20 77  |rmonic motion, w|
00000470  68 65 72 65 3a 0a 66 3d  66 72 65 71 75 65 6e 63  |here:.f=frequenc|
00000480  79 20 6f 66 20 6f 73 63  69 6c 6c 61 74 69 6f 6e  |y of oscillation|
00000490  0a 77 3d 61 6e 67 75 6c  61 72 20 76 65 6c 6f 63  |.w=angular veloc|
000004a0  69 74 79 0a 50 49 3d 33  2e 31 34 31 35 39 32 36  |ity.PI=3.1415926|
000004b0  35 34 0a 0a 66 3d 28 28  6b 2f 6d 29 5e bd 29 2f  |54..f=((k/m)^.)/|
000004c0  32 50 49 0a 46 6f 72 20  73 69 6d 70 6c 65 20 68  |2PI.For simple h|
000004d0  61 72 6d 6f 6e 69 63 20  6d 6f 74 69 6f 6e 2c 20  |armonic motion, |
000004e0  77 68 65 72 65 3a 0a 66  3d 66 72 65 71 75 65 6e  |where:.f=frequen|
000004f0  63 79 20 6f 66 20 6f 73  63 69 6c 6c 61 74 69 6f  |cy of oscillatio|
00000500  6e 0a 6b 3d 27 73 70 72  69 6e 67 27 20 63 6f 6e  |n.k='spring' con|
00000510  73 74 61 6e 74 0a 6d 3d  6d 61 73 73 20 6f 66 20  |stant.m=mass of |
00000520  6f 62 6a 65 63 74 0a 50  49 3d 33 2e 31 34 31 35  |object.PI=3.1415|
00000530  39 32 36 35 34 0a 76 6d  61 78 3d 77 41 0a 46 6f  |92654.vmax=wA.Fo|
00000540  72 20 73 69 6d 70 6c 65  20 68 61 72 6d 6f 6e 69  |r simple harmoni|
00000550  63 20 6d 6f 74 69 6f 6e  2c 20 77 68 65 72 65 3a  |c motion, where:|
00000560  0a 76 6d 61 78 3d 6d 61  78 69 6d 75 6d 20 76 65  |.vmax=maximum ve|
00000570  6c 6f 63 69 74 79 0a 77  3d 61 6e 67 75 6c 61 72  |locity.w=angular|
00000580  20 76 65 6c 6f 63 69 74  79 0a 41 3d 61 6d 70 6c  | velocity.A=ampl|
00000590  69 74 75 64 65 20 6f 66  20 6f 73 63 69 6c 6c 61  |itude of oscilla|
000005a0  74 69 6f 6e 0a 0a 61 6d  61 78 3d 77 b2 41 0a 46  |tion..amax=w.A.F|
000005b0  6f 72 20 73 69 6d 70 6c  65 20 68 61 72 6d 6f 6e  |or simple harmon|
000005c0  69 63 20 6d 6f 74 69 6f  6e 2c 20 77 68 65 72 65  |ic motion, where|
000005d0  3a 0a 61 6d 61 78 3d 6d  61 78 69 6d 75 6d 20 61  |:.amax=maximum a|
000005e0  63 63 65 6c 65 72 61 74  69 6f 6e 0a 77 3d 61 6e  |cceleration.w=an|
000005f0  67 75 6c 61 72 20 76 65  6c 6f 63 69 74 79 0a 41  |gular velocity.A|
00000600  3d 61 6d 70 6c 69 74 75  64 65 20 6f 66 20 6f 73  |=amplitude of os|
00000610  63 69 6c 6c 61 74 69 6f  6e 0a 0a 4b 45 3d bd 6d  |cillation..KE=.m|
00000620  76 b2 0a 57 68 65 72 65  3a 0a 4b 45 3d 6b 69 6e  |v..Where:.KE=kin|
00000630  65 74 69 63 20 65 6e 65  72 67 79 20 6f 66 20 6f  |etic energy of o|
00000640  73 63 69 6c 6c 61 74 6f  72 0a 6d 3d 6d 61 73 73  |scillator.m=mass|
00000650  20 6f 66 20 6f 73 63 69  6c 6c 61 74 6f 72 0a 76  | of oscillator.v|
00000660  3d 76 65 6c 6f 63 69 74  79 20 6f 66 20 6f 73 63  |=velocity of osc|
00000670  69 6c 6c 61 74 6f 72 0a  0a 50 45 3d bd 6b 73 b2  |illator..PE=.ks.|
00000680  0a 46 6f 72 20 73 69 6d  70 6c 65 20 68 61 72 6d  |.For simple harm|
00000690  6f 6e 69 63 20 6d 6f 74  69 6f 6e 2c 20 77 68 65  |onic motion, whe|
000006a0  72 65 3a 0a 50 45 3d 70  6f 74 65 6e 74 69 61 6c  |re:.PE=potential|
000006b0  20 65 6e 65 72 67 79 20  6f 66 20 6f 73 63 69 6c  | energy of oscil|
000006c0  6c 61 74 6f 72 0a 6b 3d  27 73 70 72 69 6e 67 27  |lator.k='spring'|
000006d0  20 63 6f 6e 73 74 61 6e  74 0a 73 3d 64 69 73 70  | constant.s=disp|
000006e0  6c 61 63 65 6d 65 6e 74  20 6f 66 20 6f 73 63 69  |lacement of osci|
000006f0  6c 6c 61 74 6f 72 20 66  72 6f 6d 20 74 68 65 0a  |llator from the.|
00000700  65 71 75 69 6c 69 62 72  69 75 6d 20 70 6f 73 69  |equilibrium posi|
00000710  74 69 6f 6e 0a 45 3d bd  6b 41 b2 0a 46 6f 72 20  |tion.E=.kA..For |
00000720  73 69 6d 70 6c 65 20 68  61 72 6d 6f 6e 69 63 20  |simple harmonic |
00000730  6d 6f 74 69 6f 6e 2c 20  77 68 65 72 65 3a 0a 45  |motion, where:.E|
00000740  3d 74 6f 74 61 6c 20 65  6e 65 72 67 79 20 6f 66  |=total energy of|
00000750  20 6f 73 63 69 6c 6c 61  74 6f 72 0a 6b 3d 27 73  | oscillator.k='s|
00000760  70 72 69 6e 67 27 20 63  6f 6e 73 74 61 6e 74 0a  |pring' constant.|
00000770  41 3d 61 6d 70 6c 69 74  75 64 65 20 6f 66 20 6f  |A=amplitude of o|
00000780  73 63 69 6c 6c 61 74 69  6f 6e 0a 0a 51 3d 32 50  |scillation..Q=2P|
00000790  49 28 45 53 2f 45 4c 29  0a 57 68 65 72 65 3a 0a  |I(ES/EL).Where:.|
000007a0  51 3d 71 75 61 6c 69 74  79 20 66 61 63 74 6f 72  |Q=quality factor|
000007b0  20 6f 66 20 6f 73 63 69  6c 6c 61 74 6f 72 0a 50  | of oscillator.P|
000007c0  49 3d 33 2e 31 34 31 35  39 32 36 35 34 0a 45 53  |I=3.141592654.ES|
000007d0  3d 65 6e 65 72 67 79 20  73 74 6f 72 65 64 20 69  |=energy stored i|
000007e0  6e 20 6f 73 63 69 6c 6c  61 74 6f 72 0a 45 4c 3d  |n oscillator.EL=|
000007f0  65 6e 65 72 67 79 20 6c  6f 73 74 20 70 65 72 20  |energy lost per |
00000800  6f 73 63 69 6c 6c 61 74  69 6f 6e 0a 0a 0a 0a 0a  |oscillation.....|
00000810  0a 0a 0a 0a 0a 0a 0a 0a  0a 0a 0a 0a 0a 0a 0a 0a  |................|
*
00000840  0a 0a 0a 0a 0a 0a 0a 0a  0a 0a 0a 0a 0a 0a        |..............|
0000084e