Block 1 is stacked on top of block 2, with a rope connecting them to each other over apulley, as shown below. Blocks 1 and 2 have masses of 1 and 2 kg, respectively, while the pulley has amass of 4 kg and radius of 10 cm (it is made of depleted uranium, so it is very dense). Another rope isattached to the left side of block 2, and a person pulls on it with a force of 30 Newtons. The coefficient ofkinetic friction between blocks 1 and 2 is 0.3, and between block 2 and the floor is also 0.3.If the right edge of block 1 is 20 cm from the right edge of block 2, how long after the person startspulling will those edges line up?