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Why we prefer to use a wrench with long arm ?

Why we prefer to use a wrench with long arm ?

Grade:12

1 Answers

Anurag Kishore
37 Points
11 years ago

As one knows

TORQUE = R cross F

=> F = torque/R

As torque required to open a nut is constant. So F is inversely proportional to R.

Hence if load arm is long we require less force to open.

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