Here are some additional problems from the book:
Ch 5 p101-107: 33, 35, 37, 39, 43, 49, 51, 57, 59, 63, 65
Ch6 p123-129: 7, 17, 35, 37, 43, 49, 55, 57, 61
Also Sample problem 6.8 on p 117
Also here are some FRQ from past years that might serve as good practice, though parts of them rely on energy concepts that we haven't learned yet.
They're from
http://apcentral.collegeboard.com/apc/members/exam/exam_information/8039.html
2015 #1
2014 #2 skip part 1
2013 #2
2008 #1
2006 #1 all but last part, and #2 all but last 2 parts
2003 #1 parts a, bii
Finally, here is a practice test with answers that looks good.
https://www.crashwhite.com/apphysics/materials/practicetests/practice_test-3-laws_of_motion-circular_motion.pdf
