posted by Phil .
HELP! A tennis ball is attached to a .8m long string whirled around in a circle with a constant frequency of 1.2 Hz. What is the linear(tangential) velocity of the tennis ball?
radius = 0.8 m.
C = pi*D = 3.14*(2*0.8) = 5.02 m. = Circumference.
1.2 Hz = 1.2cycles/s.
V = 1.2cy/s * 5.02m/cy. = 6.03 m/s.