Replace the $180-$N force P with an equivalent force$-$couple system at A$.($Include a minus sign if necessary.$)$ A figure shows a machine part. The horizontal section A B of the machine is along the x$-$axis. An L$-$shaped member is attached to A B near B$.$The vertical member of the L$-$shaped member is along the negative y$-$axis. The horizontal member of the L$-$shaped member is along the z$-$axis. The length of A B is $200$ millimeters. Point C is $120$ millimeters below point B$.$ The distance between C and D marked on the L$-$shaped member is $100$ millimeters. The distance between D and the right edge of the L$-$shaped member is $20$ millimeters. The force at point D acts downward with an orientation $35$ degrees off the y$-$axis and lies in a plane parallel to the y$-$z plane.The magnitude of the equivalent force is $($ N$)$j $+($ N$)$k$.$The magnitude of the equivalent couple is $($ Nm$)$i $+($ Nm$)$j $+($ Nm$)$k$.$