An irrigation system uses a straight sprinkler pipe r = 350 ft long that pivots around a central point as shown. due to an obstacle the pipe is allowed to pivot through θ = 220° only. find the area irrigated by this system. (round your answer to the nearest whole number.)

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).