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A system of pulleys is used to lift a lo...

A system of pulleys is used to lift a load of 1000 `kg_(wt)`. If the efficiency of the pulley system is 80% and velocity ratio is 20, find the effort required to lift the load.

Text Solution

Verified by Experts

Use, efficiency = `(M.A.)/(V.R.) xx 100`
Substitute
MA = ?
`80 = (MA)/(20) xx 100 implies MA = (80)/(5) = 16`
`MA = ("load")/("effort")`
implies effort = `(1000)/(16)` = 62.5 kgwt
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