posted by Anonymous .
A coin is placed 11.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turntable until a rate of 31 rpm is reached, at which point the coin slides off. What is the coefficient of static friction between the coin and the turntable?
w= 31*2PIr/60 in rad/sec
set them equal, solve for mu.
i got 3.64 but that is wrong because it is too large
I didn't get that, I get on the order of .1
Check your work, or post it here.