1. The problem statement, all variables and given/known data MECHANICS: Given Theta, L, M, and acceleration of elevator relative to ground. Find the time it takes for the block to reach the end of the incline. Here is a diagram: http://k-elahian.com/tmp/nip.PNG [Broken] 2. Relevant equations f=ma kinematics relative acceleration 3. The attempt at a solution I've gotten 3 different answers so far. Basically I do f=ma for the m mass and then split it into x and y (slanted system) and then I relate the accelerations of the the bodes Amg=Ame+Aeg (ground is g and elevator is e). After finding Ame I use that in my kinematics equation.