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Physics of Work

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Questions and Answers

If a person climbs up the steps of a staircase and reaches the second floor of a building, does this activity involve work?

No, because there is no displacement of the person

Yes, because it involves a lot of energy

Yes, because it requires physical effort

No, because there is no displacement of the building (correct)

According to the scientific definition, which of the following activities may involve very little 'work'?

Discussing problems with friends

Reading books and drawing diagrams

Pushing a huge rock that does not move (correct)

Climbing up a tall tree

In the context of science, when does work occur?

When someone discusses problems with friends

When someone spends a lot of energy

When there is no displacement of an object (correct)

When someone gets completely exhausted

When someone gets completely exhausted after pushing a heavy load, does this mean they have done work on the load?

No, because there is no displacement of the load Signup and view all the answers

In common parlance, if someone is 'working hard' by spending a lot of time in studies, reading books, and discussing problems, what does this indicate according to the scientific definition of work?

It indicates very little 'work' done Signup and view all the answers

According to the scientific definition, which of the following situations involves work?

Lifting a heavy box to place it on a shelf Signup and view all the answers

In the context of science, which scenario does not qualify as 'work'?

Holding a heavy object stationary above the ground Signup and view all the answers

Which activity involves a lot of work based on the scientific definition?

Carrying a heavy load across a room Signup and view all the answers

Which of the following activities does not align with the scientific definition of work?

Holding a heavy box without moving it Signup and view all the answers

Which of the following activities involves work as per the scientific definition?

Lifting a bucket of water from the ground to place it on a table Signup and view all the answers