The problem statement, all variables and given/known data The three thin rods shown below are initially at the same angle, with one rod twice as long as each of the others two. Rod X is made of brass (density = 8.6 g/cm3), the others are made of aluminum (density = 2.7 g/cm3). All rods are released from rest at the same time. Select an answer for each statement below. A. Time for Z to reach the ground is ... for Y. (greater than, less than, or equal to) B. The initial linear acceleration of the top end of Y is ... that of Z. (greater than, less than, or equal to) C. Just before landing the kinetic energy of X is ... that of Y. (greater than, less than, or equal to) The attempt at a solution Here is my reasoning. For part A, Z would take longer, since the center of mass of the rod has a greater distance to fall. For part B, the linear accelerations would be the same, since gravity acts the same on both of them. For part C, the kinetic energy of X would be greater than Y since X will have a greater mass and K=(1/2)mv^2. One or more of my answers are wrong, though, so can anyone see where I'm going astray? Thank you for your help.