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Blazing goIITian

Joined:	19 Aug 2009
Post:	302

13 Sep 2009 12:50:44 IST

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is work always done against a force and there is no role of the applied in the net work done?

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is work always done against a force and there is no role of the applied in the net work done?

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Soumen Goswami

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Joined: 10 Apr 2007

Posts: 1777

3 Oct 2009 18:41:11 IST

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There is no reason why work should always be done against a force. Consider a particle on a smooth surface pulled by a horizontal force F. Then the only work done is that done by F. There is no "opposing" work.

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