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प्रश्न
Why are spanners with long handles easier to open nuts of a truck wheel as compared to spanners with short handles?
लघु उत्तर
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उत्तर
A spanner turns the nut about its axis. The turning effect, or moment of force, equals the applied force multiplied by its perpendicular distance from the axis. A long handle provides a greater distance, so the same force produces a larger turning moment. Therefore, less force is needed to loosen the tight nut than when using a short-handled spanner.
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