Question

Why do we prefer a wrench with long arm to open a screw ?

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

Hey mate....

here's your answer....

Why do we prefer a wrench with long arm to open a screw ?

We prefer a wrench to open a screw because it requires constant force...

F is inversely proportional to R.

F = Torque/R

Hope it helps ⭐