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Why is it easy tight a nut using a spanner of long arm than of a short arm spanner?
Wiki User
∙ 6y ago
The longer the arm of a spanner, the more leverage can be used. More leverage allows more pressure to be used against a nut to either tighten or to loosen.
Wiki User
∙ 6y ago
Wiki User
∙ 6y agoTighten of nut requires torque (T) which is force(F) x distance (D); the longer arm means longer distance and less force required for same torque; F = T/D
Wiki User
∙ 6y agoThe longer lever arm has a higher mechanical advantage.
Wiki User
∙ 6y agoThe torque applied to the nut is proportional to the length of the spanner's arm.
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