Why is force at a perpendicular to displacement is zero?
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Work is negative if the force has a component opposite the direction of motion. Work is zero if the force is perpendicular to the motion. displacement d, we use only the force component along the object's displacement. The force component perpendicular to the displacement direction does zero work.
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Explanation: Work done = force × acceleration × cos(Theta)
given, cos(Theta) = cos90° = 0
so, Work done = force× acceleration×0
Work done = zero
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