English, asked by boharaaditi, 6 months ago

write a paragraph on everything is good for us in 80 to 100 words?

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Answered by ItzSmartavinay

2

Answer:

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

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