# a shaft rotation @ 800 rpm delivers a torque of 240 N.m to an output shaft that is rotating @ 200 rpm.

a. if the efficiency of the machine is 70%, compute the output torque

b, what is the output power

e=Po/Pi .7=x/240 N.m = 168 N.m

this is not the answer in the book so I obviously have no idea what I am doing...help?