A wrench with a length of 48cm is being used to unscrew a 6cm bolt. If a torque of 72Nm 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
Feb 13, 2018

The force applied to the wrench must be 150N

Explanation:

Torque is τ=Frsin(θ)

The torque value in this problem is similar to static friction. Once it's overcome, the bolt will turn.

72Nm=F.48m, therefore F=150N