If one of the conditions for work is not met, then work is not done. Both a force acting on an object and displacement of the object are necessary for work to be done.
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Saroj Shahani
Asked: In: Class 9 Science
The two conditions that need to be satisfied for work to be done are: (i) a force should act on an object, and (ii) the object must be displaced.
To lift a book through a height, you must apply a force. The book rises up as a result of the force applied.
Saroj Shahani
Asked: In: Class 9 Science
Yes, another example is when you lift a book from the floor to a table. You exert an upward force on the book, and the book moves upwards through a distance. Hence, work is done according to the scientific definition.
Saroj Shahani
Asked: In: Class 9 Science
The necessary conditions for work to be done in the provided examples are that a force must be exerted on an object, and the object must be displaced through a distance as a result of the force.