Given data
*The torque produced by a wrench on a stubborn is 30 N.m
The formula for the torque is given as
![T\text{=F.r}](https://img.qammunity.org/2023/formulas/physics/college/y0s24qrvuvtajsv7tm2t0leq44jtrok0zo.png)
*Here F is the perpendicular force
*Here r is the distance
Now, if the lever arm is doubled with no change in force, then the resulting torque is also gets doubled
![T=60\text{ N.m}](https://img.qammunity.org/2023/formulas/physics/college/7nota63olex7zr2k83o8qz9byeapsq0p76.png)