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A machine is operated by a power of 50 N...

A machine is operated by a power of 50 N and the power has a downward displacement of 0.25 m in raising a load of mass 100 N through 10 cm. Calculate M.A., V.R. and efficiency.

Text Solution

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M.A. = `("Load")/("Power")=(100)/(50) = 2`
`V.R.= ("displacement of the power")/("displacement of the load")`
`V.R.=(0.25)/(0.10) = 2.5`
`eta = (M.A.)/(V.R.)= (2)/(2.5) = 0.8`
`:. eta % = 0.8 xx 100 = 80%`
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