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प्रश्न
What is the work done when the displacement of the body is in the opposite direction to that of the applied force?
लघु उत्तर
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उत्तर
The work done is negative because the force and displacement are in opposite directions.
W = F s cosθ
When displacement is opposite to the applied force,
θ = 180°
W = F s cosθ 180°
= −Fs
Therefore, when a body moves opposite to the applied force, the work done by the force is negative.
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