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| 1. |
Why a spannerwith a long handle is preferredto tighten screws in heavy vehicles ? |
| Answer» Solution :This is because EFFECT to tighten the screws DEPENDS upon the perpendicular distance of the applied force the ACIS of rotation in power arm . Larger the power arm less is the force required to turn the screws. So spanner is provided with a long HANDLE. | |