convert cm/dyne to um/mN - diyAudio
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Old 9th May 2009, 09:43 PM   #1
pfcs49 is offline pfcs49  United States
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Default convert cm/dyne to um/mN

Posted: 09 May 2009 22:05 Post subject: objective comparison: cm/dyne to um/mN in actual values/conv


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I am wanting to compute arm resonances for various carts/arm combos.
The cartridge database (www.cartridgedb.com) works only w/cm/dyne.
One cart is 28um/mN, another 30. People say go by tracking force; my Yamaha MC705 calls for 1.7g, but has a compliance of 6.0x10(-6)cm/dyne, a very low compliance, whereas my B&O MMC1 is 1g/very high compliance. Sure would help to have empirical data and plug it into the calculator
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Old 10th May 2009, 12:02 AM   #2
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1 dyne = 1 g.cm.s^-2

therefore 1 cm / dyne = 1 g ^-1.s^2 = 10^-3 kg^-1.s^2

1 um = 10^-6m

1 mN= 10^-3 kg.m.s^-2

therefore 1 um / mN = 10^-3 kg^-1.s^2

the two units are thus identical.
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Old 10th May 2009, 12:16 AM   #3
Nanook is offline Nanook  Canada
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Default pfcs49, a calculator (online)

look here
an online conversion page for almost any units. Handy to bookmark.


also are those weights quoted or mass? If grams-force then weight (mass X force of gravity), easy enough to convert into a mass...


stew
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Old 10th May 2009, 07:59 AM   #4
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I stuffed up the 10^-3s in my post

it should read:

1 cm / dyne = 1 g ^-1.s^2 = 10^3 kg^-1.s^2

thus 10^-6 cm/ dyne = 10^-3 kg^-1.s^2

1 um = 10^-6m

1 mN= 10^-3 kg.m.s^-2

therefore 1 um / mN = 10^-3 kg^-1.s^2

the two units are thus identical.
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