Question
When can you say that the work done is either positive, negative or zero?
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Answer
- When the force and the displacement are in the same direction, the work done by the force is positive.
- When the force and displacement are in the opposite directions, the work done by the force is negative.
- When the applied force does not cause any displacement or when the force and the displacement are perpendicular to each other, the work done by the force is zero.
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