Amachinist is using a wrench to loosen a nut. the wrench is 25.0 {\rm cm} long, and he exerts a 17.0-{\rm n} force at the end of the handle at 37 ^\circ with the handle

what is the magnitude of the torque does the machinist exert about the center of the nut?

what is the direction of the torque in part (a).

what is the maximum torque he could exert with this force?
how should the force mentioned in part (c) be oriented ?