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###### Science · Physics
Question details

A 7460-kg truck is subjected to a horizontal force f1 due to the engine and a force F2  due to the wind, which acts at an angle (theatre) = 56°, as shown in Figure. The magnitudes of the forces are F1 = 5670 N and F2 = 3365 N.

(a) What is the horizontal acceleration (magnitude and direction) of the truck if the friction is negligible?

(b) Find the work done by each force if the truck moves a distance of 16.4 m.

(c) If the truck was at rest with the same forces acting, what is the minimum coefficient of static friction between the tires and the road for which the truck could stay at rest?

(d) F1 and F2 forces are now removed, and the truck is loaded. Its centre of gravity is located as shown in the figure. Find the magnitudes of the forces exerted by the ground on (a) the front wheels and (b) the rear wheels of the truck.

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