A wrench with a length of #15 cm# is being used to unscrew a #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
Apr 30, 2018
Let's derive the force needed to unscrew the bolt,
Now, recall,
Let's assume
is the minimum torque needed to unscrew the bolt with the torque wrench.