Aramp leading into a building makes a 15o angle with the ground. the end of the ramp is 10 feet from the base of the building. approximately how long is the ramp? round to the nearest tenth.

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).