can you explain how the V.R. is the same despite varying M.A. and efficiency for the same machine (preferably with an example) ?
(class 10 icse)
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Explanation:
Relation between, M.A., V.R. and Efficiency: Let a machine overcome a load L by applying an effort E. In time t, the displacement of effort is dE and displacement of load is dL. Then
Work Input = Effort × Displacement of effort = E × de
Work Input = Load × Displacement of load = L × dl
Efficiency = Work Output / Work Input
= L × dl / E × de
L / E = M.A / V.R
M.A = V.R × Efficiency
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