Having trouble with this "Moments about the coordinate axes" problem! When a force F is applied to the handle of the valve shown, its moments about the x and z axes are, respectively, M_x= -77 lb ft and M_z= -81 lb ft. For d=27 in., determine the moment M_y of F about the y axis. [PLAIN]http://img411.imageshack.us/img411/8366/092310015800.jpg [Broken] I figure I'm supposed to use the formulas: M_x= yF_z - zF_y M_y= zF_x - xF_z M_z= xF_y - yF_x but I'm having trouble on finding a component of the force. Also, are my x,y,z's correct?? I got, x=-4, y=11, z=-27 Thanks!