Two blocks are connected by massless string that is wrapped around a pulley. Block 1 has a mass m1=6.50 kg, block 2 has a mass m2=2.80 kg, while the pulley has a mass of 1.60 kg and a radius of 16.2 cm. When the pulley turns, there is friction in the axel that exerts a torque of magnitude 0.220 N m.
If block 1 is released from rest at a height h=1.00 m, how long does it take to drop to the floor?