B. The top of the chair lift occurs at y=20. Explain how Gavin can find the coordinates of the chair when it reaches the top of the chair lift. The y-coordinate will be 20, so let the coordinates of the point be ( , 20). Then 20=12x+52. Solving for x shows that x= . The coordinates of the chair at the top of the chair lift are ( , ).

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).