1. The problem statement, all variables and given/known data [PLAIN]http://img89.imageshack.us/img89/6410/c3602011091514253311.jpg [Broken] 2. Relevant equations Both a and b. 3. The attempt at a solution For problem a, I don't know what to after that. If you could direct/tell me what to do next, I'd be able to figure it out. For problem b, I don't know how to set it up.