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 (2446)

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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.

All men dream but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find that it was vanity; but the dreamers of the day are dangerous men, for they may act their dream with open eyes to make it possible.

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