convert cm/dyne to um/mN
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 9th May 2009, 10:43 PM #1 pfcs49   diyAudio Member   Join Date: Nov 2007 Location: NW NJ USA 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 -------------------------------------------------------------------------------- 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
 10th May 2009, 01:02 AM #2 Mark Kelly   diyAudio Member   Join Date: Feb 2006 Location: Willy, VIC 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.
 10th May 2009, 01:16 AM #3 Nanook   diyAudio Member     Join Date: Feb 2004 Location: Chinook Country.Alberta 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 __________________ stew ☮ -"A sane man in an insane world appears insane." Let's help Ruth and Dave
 10th May 2009, 08:59 AM #4 Mark Kelly   diyAudio Member   Join Date: Feb 2006 Location: Willy, VIC 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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