A wrench with a length of #20 cm# is being used to unscrew a #4/3 cm# bolt. If a torque of #1 Nm# is needed to overcome the friction keeping the bolt in place, what is the minimum torque that must be applied to the wrench to unscrew the bolt?
1 Answer
May 17, 2016
The torque is the same to screw and to unscrew.
Explanation:
I suppose that you are asking for the perpendicular force applied at the wrench extremity to get a torque of