Posted by Anonymous on Monday, February 22, 2010 at 5:08pm.
r = 15 meters
Ac = v^2/r = .52*9.8 = 5.1 m/s
so
v^2 = 15 * 5.1 = 26
v = 5.1 m/s
distance = rate * time
2 pi r = 5.1 * time
time = 30 pi/5.1
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