solve to these three equations to find the unknowns of NB NA FA F and FB. 

F = 0; + F, = 0; (+ = 0; F 30 0.3m Solving Eqs. (1) to (5), 2000(981) N 0.75m NA FAMS NA = 0.3 NA FB = My NB = 0.3 NB Im NB = 8114.93 N NA FAFB - F cos 30 = 0 Fsin 30 +NA + NB 2000(9.81) = 0 F cos 30(0.3) - F sin 30(0.75) + = Friction. It is required that both the front and rear wheels are on the verge to slip. Thus F = 5793.16 N = 5.79 KN 1.5m NB (2.5) 200(9.81)(1) = 0 (a) 8608.49 N FA NB = 2582.55 N FB = 2434.48 N F 30 0.3m 2000(9.81) N FA Im T 1.5m 0.75m NA (a) -2 (1) (2) (3) (5)