Question

If the torque needed to loosen a bolt is 40.0 Nm, what must be the minimum force exerted on a .30 m wrench to loosen the bolt?

Answer 1

Considering that the force `F` was applied at the end of the wrench,we can have minimum force to serve the purpose

So, `tau = r×F`

Or, `F =40/(0.30)=133.32 N`