Efficiency and Advantage in systems

Question 1

What is Mechanical Advantage? How do you calculate it?

Answer 1

Mechanical Advantage - The ratio of work input to useful work output

MA = Output force / Input force
or MA = Effort arm length / Load arm length

Question 2

What is Economic Efficiency?

Answer 2

Economic Efficiency - the ability to do something well or achieve a desired outfit without wasting energy, effort, or materials

Question 3

What is Mechanical Efficiency? How do you calculate it?

Answer 3

Mechanical Efficiency - The percentage of work input that is turned into useful work output

ME = Output energy / Input energy X 100%

Question 4

What is the difference between Ideal and Actual Mechanical Advantage

Answer 4

The difference is that Ideal mechanical advantage is the calculated mechanical advantage, but the Actual Mechanical advantage is never the calculated Mechanical Advantage, because some energy is lost due to friction and slippage