English, asked by babustream709, 2 months ago

टॉपिक ऑन द डोर एंड मिसयूज ओपन द डिस्टेंस

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Answered by ItzSmartavinay

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The efficiency of a single movable pulley system is not 100% this is because (i)The friction of the pulley bearing is not zero , (ii)The weight of the pulley and string is not zero.Sep 10, 2018........m.....

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