The rotational force (centripetal) is mv^2/r = F
The frictional force which opposes the centripetal =
u*m*g
The two forces are equal.
mv^2/r = u*m*g
The m's cancel out.
u = 0.45
g = 981 cm/s^2
r = 12 cm
v = ??????
v^2 / 12 cm = 0.45 * 981 cm/s^2
v^2 = 12 * 0.45 * 981
v^2 = 5297 cm^2/s^2
v = 72.87 cm/s
let it be T
so (2pi/T)^2* r=.45g
so
T=1.03
omega=6.06
frequency=.96
Time period=1.03
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