While using a pencil sharpener, a student applies the forces and couple shown, (a) Determi...

While using a pencil sharpener, a student applies the forces and couple shown, (a) Determine the forces exerted at B and C knowing that these forces and the couple are equivalent to a force-couple system at A consisting of the force R = (2.6 Ib)i + Ryj — (0.7 lb)k and the couple = Mxi +(1.0 lb • ft)j – (0.72 lb • ft)k. (b) Find the corresponding values of Ry and Mx.