greasing a surface helps reduce friction
mechanical efficiency is the percent of the energy that you put into a machine that was transferred to the load.
Mechanical efficiency = (output energy)/(input energy) . It's typically stated as a percentage.
The mechanical efficiency of this machine is 30 percent.
Efficiency= Mechanical Advantage Speed ratio X100 Mechanical advantage divided by speed radio X (times) 100
The mechanical advantage of a machine compares the input force applied to the machine with the output force produced by the machine. It is calculated as the ratio of the output force to the input force and indicates how much a machine amplifies or reduces the input force.
Efficiency of a machine or mechanical advantage
watches
work
Efficiency % = (Output/Input) x 100
mechanical efficiency is the percent of the energy that you put into a machine that was transferred to the load.
Mechanical Efficiency is the ratio of Actual mechanical advantage to ideal mechanical advantage.Efficiency will be maximum when Actual mechanical advantage equals that of ideal.But practically not possible.Actual mechanical advantage will be less due to friction,heat,deflection etc.avoiding these loses will increase the machine efficiency.
The term for the comparison of input and output work of a machine is efficiency. It is typically calculated as the ratio of output work to input work, expressed as a percentage. A higher efficiency indicates that the machine is better at converting input work into useful output work.