Question

If a cyclist puts 600 J of work on his bicycle and the bicycle gives out 140 J of useful work. Calculate the efficiency of a cyclist.

Answer 1

Answer:

Explanation:

600/140=4.28 %

Answer 2

Concept:

The amount of work or energy saved in a given process is referred to as efficiency. Several situations have been observed where energy or work has been lost. In science, a machine's efficiency is defined as the ratio of work done by the machine to work put in by efforts.

Given:

It is given that cyclist puts 600 J of work on his bicycle and the bicycle gives out 140 J of useful work.

To Find:

We have to find the efficiency of a cyclist.

Solution:

The efficiency is given by, $n=\frac{W_{out} }{W_{in} }*100 percent$

By considering the data,

$n=\frac{140}{600}*100$

$n=23.3percent$

Hence the efficiency of a cyclist is $23.3 percent$

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