22. As shown in the figure (a), an object with a mass of m=2.4 kg slides down an inclined plane with an inclination angle of θ=32°, where the acceleration is denoted as a₀. Now, consider figure (b), the same object is tied to a thin string; the other end of which is wound around a fixed cylindrical drum of radius R=12(cm) that can rotate. The cylinder has a mass of M=1.5 kg. The acceleration of the object as it slides down the incline is denoted as a. Find the ratio a/a₀ [The moment of inertia of the cylinder is I = MR²/2 and the gravitational acceleration is g = 9.8 m/s²].

(A) 0.33
(B) 0.76
(C) 0.24
(D) 0.57