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When do we say that work is done

Posted by Khozema Hussain 7 years, 4 months ago

CBSE > Class 09 > Science

4 answers

Akash Tadwal 7 years, 4 months ago

When we say work is done following points first the force act on an object second the object will displaced 1m long. So we say work is done

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Palak ?? 7 years, 4 months ago

Work is said to be done if some force is applied and displacement is produced due to that force,if the angle between the direction of force applied and direction and direction of displacement produced is not right angle....

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Aadit Pandey 7 years, 4 months ago

We say it when a force is applied on an object which gets displaced with the effect of force exerted.therefore W=F×D

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Yogita Ingle 7 years, 4 months ago

Work is said to be done by a force acting on the object when the object is displaced along the direction of force. For example,
(i) A girl pulls a trolley and the trolley moves through a distance. The girl has exerted a force on the trolley and it is displaced along the direction of force. Therefore, work is done.
(ii) Lift a book through a height. To do this, you must apply a force. The book rises up. There is a force applied on the book and the book has moved up in the direction of force. Hence, work is done.
Thus, following two conditions need to be satisfied for work to be done:
(i) a force should act on an object, and
(ii) the object must be displaced along the direction of force.

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