segment ab is a diameter of the larger circle. segment ab intersects a chord of the smaller circle pq at a right angle at point z. segment ab intersects a chord of the larger circle mn at a right angle at point o. if mo = 7x-4, and no =6x, what is thr length of mn.

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).