Problem 1, exam II

Read the question text very carefully.

A block of mass m is released from rest at a height d=40cm and slides down a frictionless ramp and onto a first plateau, which has length d and where the coefficient of kinetic friction is mu_k=0.5. If the block is still moving, it then slides down a second frictionless ramp through height d/2 and onto a lower plateau, which has length d/2 and where the coefficient of kinetic friction is again mu_k=0.5. If the block is still moving, it then slides up a frictionless ramp.

Where is the final stopping point of the block? If it is on a plateau, state which one and give the distance L from the left edge of that plateau.

There is one crucial difference between this problem and the practice problem you did on HW7. One key word, in fact.

Put another way: can the final stopping point be on a frictionless ramp?