Having a problem with this homework question. Need some help. It isnumber 16 in

Question

Having a problem with this homework question. Need some help. It isnumber 16 in chapter 9 of Cutnell physics(8th). Reads asfollows:

-Conceptual Example 7 provides useful background for this problem.Workers have loaded a delivery truck in such a way that its centerof gravity is only slightly forward of the rear axle, as shown inthe figure. The mass of the truck and its contents is 7560 kg. Findthe magnitudes of the forces exerted by the ground on(a) the front wheels and (b) therear wheels of the truck.
***length from rear wheel to cg is 0.63m and length from frontwheel to cg is 2.30m.
Thanks!

Explanation / Answer

a) The force equation should be N1+N2-mg=0, and the torque equationabout the rear wheels is -(.63)mg+N1(2.3+.63)=0 thenN1=1.6x104 N should be the force on the frontwheels. b) N2=5.8x104 N

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