[单选题]
96.33 : Two blocks X andY are in contact on a horizontal framjn6;a+ dy7mv,5yton 1 o2f haz1/:5idaunp ; m mnfrib/m)a j)m.)rictionless surface. A 36 N constant force is applied to X as shown to the right. T)/j nu5a;mma.):bfmmz1rd/in i) aphhe force exerted by X onY is: