Weighted Tuning Forks
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 Weighted 50 Hz Tuning Fork to Stimulate Nerve Healing  US $1.29
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 OM Weighted Tuning fork Meditation Relaxation Energy US $1.63 |
 OM Tuner Weighted Ohm Tuning Fork MalletPouchF ship US $35.52
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 Weighted Chakra Harmonic Planetary 26 Tuning Forks US $398.99
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 Mid Ohm OM Weighted Peace Tuning fork w ActivatorPouch US $1.29
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 Weighted 7 Chakra 8 Harmonic Healing 15 Tuning Forks US $298.99
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 7 Chakras 1 Soul Purpose Weighted Tuning forks New US $179.00
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 Otto Tuner Tuning fork Weighted 128 Hz Free Activator US $36.00
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 Total 15pc 7 Chakra Harmonic Weighted Tuning forks US $299.00
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 REMOVABLE END WEIGHTS Make your TUNING FORK WEIGHTED US $7.99
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 50 Hz Nerve Tuning fork Weighted to healFree Activator US $39.00
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 Weighted Planetary Astrology Cosmic Solar Tuning Forks US $267.82
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 OM Tuner Weighted Tuning Fork for Meditation to Heal US $36.00
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 New Weighted Sacred Solfeggio 9 pc Tuning forks Tuners US $259.00
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 Otto Tuner Tuning fork Weighted 32 Hz Free Activator US $39.00
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 11 Planetary Tuning forks Weighted New Free Activator US $259.00
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 Low Ohm Tuner Weighted Om Tuning Fork Large Activator US $42.00
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 Weighted 64 Hz Otto Tuning Fork for Emotional Balance US $35.99
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 11 Planetary Tuning forks Weighted ActivatorFast ship US $261.80
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 Weighted 32Hz 64Hz 128Hz Otto OM Healing Tuning Fork US $118.99
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 Harmonic Tuning Forks non weighted US $99.00
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 Mid Ohm Tuner Weighted Om Tuning Fork Large Activator US $36.00
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 7 Chakras 1 Soul Purpose Weighted Tuning forks Bonus US $179.00
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 8 Solar Harmonic Spectrum Tuning Forks WeightedActivtr US $169.00
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 New O3 Ozone oxygen Weighted Tuning Fork Activator US $42.00
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 8 Harmonic Spectrum Tuning Forks Weighted for healing US $169.00
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 Weighted 32Hz 64Hz 128Hz Otto Tuning Forks for Peace US $98.99
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 15 Weighted Human Organ Tuning forks Activator Pouch US $308.99
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 12 Weighted Mineral Nutrients Tuning Forks Activato US $268.99
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 New 8 Chakras Weighted Tuning forks Activator Pouch US $178.99
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 High Quality 7 Chakras weighted Tuning forks Activator US $158.99
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 Low Ohm Tuner Weighted Om Tuning Fork Large Activator US $41.99
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 Otto Tuner Tuning fork Weighted 64 Hz Free Activator US $35.99
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 OM Tuner Weighted Ohm Tuning Fork Activator Pouch US $35.99
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 Weighted Torn Ligament Muscle Pain Healing Tuning Forks US $98.99
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 Weighted O3 Ozone Tuning Fork Curing Abnormal Diseases US $41.99
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 Weighted Low Mid Unweighted High OM OHM 4 Tuning fork US $118.99
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 Weighted Sacred Solfeggio Magical Repair 9 Tuning forks US $256.80 |
 Human Body Organ Parts Healing 15 Weighted Tuning forks US $308.99
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 Weighted Harmonic Solar Spectrum 8 Healing Tuning forks US $168.99
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Physics - Waves?
In an experiment on standing waves, a string 47 cm long is attached to the prong of an electrically driven tuning fork that oscillates perpendicular to the length of the string at a frequency of 60 Hz. The mass of the string is 0.081 kg. What tension must the string be under (weights are attached to the other end) if it is to oscillate in four loops?
Kia ora
If the string is to move in a standing wave with "four loops" that would be the fourth harmonic, presumably.
So the wavelength will be 0.47/2=0.235m since harmonics occur every time you can fit another half-wavelength into the string.
The frequency is 60Hz so by applying the wave equation v=fλ the wave speed must be 60*0.235=14.1m/s.
The speed of a wave in a string is v=√(T/μ) where T is the tension and μ is the linear density (mass per unit length)
The 0.47m string has mass of 0.081kg so μ=0.081/0.47=0.172kg/m
Rearranging the formula:
T=μv²=34.3N
