Efficiency formula

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We know the efficiency formula can be used to calculate the percentage of efficiency of a machine. We know the formula to find the percentage of efficiency of a machine. We can denote this by a symbol

Example1: Find the efficiency of a cyclist if he puts 800 J of a work on his bicycle gives out 160 j of useful work.

Solution: From the problem we can write the work input and work output,

Therefore, work input = 800 J

Work output = 160 J

We know the formula for efficiency that is

Example2:Find the efficiency of john if he ate 2 apples for every 5 apples peter were given

Solution: From the problem we can write the work input and work output,

Therefore, eating input of apples = 2

Number of leaving apples or eating apples output = 5

We know the formula for efficiency that is




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