View Policin Current Attempt in Progress The figure shows two blocks connected by a cord (of negligible man) that passes over a frictionless pulley taho of negligible mass]. The arrangement Is known as Atwood's machine, Block 1 has mass my = 1.5 kg: block ? has mass my = 3.1 kg. What are (a) the magnitude of the blocks' acceleration and (b) the tension in the cord? Laj Number Unity [b] Number Units