EFFICIENCY OF CRANE OR MOTOR
The ratio of output power to the input power is called efficiency.
\(
\eta = \frac{{output\,power}}
{{Input\,power}} \times \,100
\)
\(
\eta = \,\,\frac{{p_0 }}
{{p_i }} \times 100
\)
Total input power \(
P_i \, = \,\frac{{100}}
{\eta } \times \frac{{mgh}}
{t}
\)
Power \(
\, = \,\,\frac{{\text{n}\,\left( {\frac{1}
{2}\,\text{mv}^2 } \right)}}
{\text{t}}
\)