We will start using the 4th edition (not the 5th edition) of Physics (Vol 1) by Halliday, Resnick & Krane. You can get a second-hand copy for cheap on Amazon, and there are also multiple copies on reserve in the library. It is only recommended, not required: I will post my lecture notes on this website, and the problem sets will contain the full text of the problems. You can also reading K & K, which is a great book.
Homework #2: K & K Problems 6.15-6.16 are deferred until HW #3, as I didn't get to pendulums in class.
TA Katherine Hyatt's section notes are available to read online! Click here