Question

Efficiency formula with mechanical advantage and velocity ratio

Answer 1

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Efficiency Formula. Efficiency is a measure of how much work or energy is conserved in a process. ... The efficiency is the energy output, divided by the energy input, and expressed as a percentage. A perfect process would have an efficiency of 100%.

Mechanical Advantage (MA) Mechanical advantage is defined as the ratio of resistance overcomes to the effort applied. The simple machine requires force to do work. The resistive force to be overcome is called load and the force applied to overcome the load is called effort.




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Answer 2

Velocity ratio of simple machine is the ratio of distance travelled by effort to the distance travelled by load in the machine. The efficiency of a simple machine is defined as the ratio of useful work done by machine (output work) to the total work put into the machine (input work).