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Give condition for no work.

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Give condition for no work.

    • Posted by Priya Gupta 6 years, 8 months ago

    CBSE > Class 11 > Physics
    • 1 answers

    Yogita Ingle 6 years, 8 months ago

    • When the force acts in a direction at right angle to the direction of displacement (cos90° = 0), no work is done (zero work).
    • Work done by the force is negative if the angle between force and displacement is obtuse (90°<θ<180°)  as cosθ is negative. This signifies, when the force and displacement are in opposite direction, work done is negative. This work is said to be done by the body.

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