In the figure below, the pulleys and the cord are light, all surfaces are frictionless, and the cord does not stretch. http://awesomescreenshot.com/0301qqz07c How does the acceleration of block 1 compare with the acceleration of block 2? (Use the following as necessary: m1, m2, and a2.) Explain your answer. I know that a_1 should be 2a_2 but I have no idea why. Can someone please explain in details why its like that?