Review Conceptual Example $7$ as background material

for this problem. A jet transport has a weight of $1\mathrm{.}00106$ N and is at rest on the runway. The two rear wheels are $15\mathrm{.}0$ m behind the front wheel, and the plane's center of gravity is $12\mathrm{.}6$ m behind the front wheel. Determine the normal force exerted by the ground on $($a$)$ the front wheel and on $($b$)$ each of the two rear wheels.