GIVE REASON .A TEACHER GOING UP AND DOWN IN THE CLASS IS DOING WORK BUT A CHILD STANDING AND READING A BOOK IS NOT DOING ANY WORK.

Work is simply a formula in physics.

In the formula, work = Force x Distance moved.

As the student is not moving and covering any distance, the work done is zero.

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A child standing and reading a book id not a work because it does not take use of any energy the our body gets from the food we eat but a teacher going up and down in the class is a action that is using energy. Hope my answer helps you.If my answer had helped you please can give me a thumbs up.....

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