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?

<p>No, because there is no displacement of the load (C)</p> 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?

<p>It indicates very little 'work' done (B)</p> Signup and view all the answers

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

<p>Lifting a heavy box to place it on a shelf (A)</p> Signup and view all the answers

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

<p>Holding a heavy object stationary above the ground (B)</p> Signup and view all the answers

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

<p>Carrying a heavy load across a room (E)</p> Signup and view all the answers

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

<p>Holding a heavy box without moving it (B)</p> Signup and view all the answers

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

<p>Lifting a bucket of water from the ground to place it on a table (E)</p> Signup and view all the answers

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