Question

Why do we use a range of long arm to unscrew a nut tightly fitted to a bolt?

Answer 1

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.

Answer 2

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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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