The efficiency of lever is always less than 100%why

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poudelashish572 poudelashish572

03-03-2021
Physics

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The efficiency of lever is always less than 100%why

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All of the following expressions have a value between 0 and 1, excepta. \frac{(-3^{7})}{(-3)^9}b. 4^{-10}× 4^{6}c. \frac{(8^3)^3}{8^{-4}} d. ( \frac{2}{5} ^{8})

find the circumference of a circle whose radius is 15.4cm

zidaneboussofi2005 zidaneboussofi2005 · Answer 1 · 2021-03-03T03:21:03+01:00

zidaneboussofi2005 zidaneboussofi2005

03-03-2021

Answer:

The output work is always less than the input work because some of the input work is used to overcome friction. Therefore, the efficiency is always less than 100 percent.

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