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प्रश्न
State the condition of negative work.
लघु उत्तरीय
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उत्तर
Condition: Work done is negative when the displacement of the body is in the opposite direction to the applied force.
Angle (θ): The angle between force and displacement is obtuse or straight (90° < θ ≤ 180°).
Example: Force of friction acting on a moving bicycle.
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