A cylindrical pulley with a mass of 6.2 kg, radius of 0.677 m and moment of inertia 12 M r2 is used to lower a bucket with a mass of 2.3 kg into a well. The bucket starts from rest and falls for 4.2 s. What is the linear acceleration of the falling bucket? The acceleration of gravity is 9.8 m/s2. Answer in units of m/s2.