This Lecture is a Must. Weight - Perceived Gravity - Weightlessness Free Fall - Zero Gravity in Orbit (Misnomer). Great Demos
Assignments Lecture 5, 6, 7 and 8: http://freepdfhosting.com/95e6843397.pdf
Solutions Lecture 5, 6, 7 and 8: http://freepdfhosting.com/4984cbb7f1.pdf