A truck with a gross weight of 30,000 pounds is parked on a slope of d° (see

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A truck with a gross weight of 30,000 pounds is parked on a slope of d° (see figure). Assume that the only force to overcome is the force of gravity.
oP Weight = 30,000 lb

(a) Find the force required to keep the truck from rolling down the hill in terms of d.
(b) Use a graphing utility to complete the table.

0° | 1°| 2° 3° 4° 5° Force

(c) Find the force perpendicular to the hill when d = 5o.

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