Test 1, 2008
vA = 1 ft/s up
vB/A = 2i - 1j ft/s
v = 4 er + 4 etheta ft/s
a = 9.66 er ft/s2
N = 459. 6 lbf
Just use LM in n and t directions.
a) I had four equations and four unknowns for this part.
b) Just use energy for this part (don't forget the initial spring