Mechanical Efficiency formula |
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\( \eta \;=\; \dfrac{ W_o }{ W_i } \cdot 100 \) (Mechanical Efficiency) \( W_o \;=\; \dfrac{ \eta \cdot W_i }{ 100 }\) \( W_i \;=\; \dfrac{ W_o \cdot 100 }{ \eta }\) |
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| Symbol | English | Metric |
| \( \eta \) (Greek symbol eta) = Mechanical Efficiency | \(dimensionless\) | \(dimensionless\) |
| \( W_o \) = Output Work | \(ft-lbf\) | \(J\) |
| \( W_i \) = Input Work | \(ft-lbf\) | \(J\) |
Mechanical efficiency, abbreviated as \( \eta_m \) (Greek symbol eta), a dimensionless number, is a measure of how effectively a machine or mechanical system converts input energy into useful output energy. It quantifies the ratio of the useful output work or power to the input work or power, taking into account losses due to friction, heat, and other inefficiencies in the system. Mechanical efficiency provides insights into how well a machine or system performs its intended function while accounting for losses that occur during operation. A mechanical system is considered highly efficient when it can convert a significant portion of the input energy into useful output energy, minimizing waste.
