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![[Post New]](/templates/default/images/icon_minipost_new.gif) 6 Apr 2008 20:58:59 IST
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see the ring is only rolling its com does not move so no chng in Pe for it alone
but for the particle ini it is @ the top @ a dist 2R from the ground...now when the ring rotates by 90 the particle comes to the same level as the centre of ring...so it comes down by a ht mgr
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Nitwit Blubber Odment Tweak
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