$$ f_c =f_s $$
$$ \ frac {mv^2} {r} =\ mu_sn $$
>> Rの解決：私たちは持っています：
$$ r =\ frac {mv^2} {\ mu_sn} =\ frac {（96 \ text {kg}）（2.9 \ text {m/s}）^2} {（0.14）（96 \ text {kg}）（9.81 \ text {m/s}^2）} "
$$ r =\ frac {793.72 \ text {m}^2/\ text {s}^2} {941.76 \ text {m/s}^2} $$
$$ \ boxed {r =\ bf {0.842 \ text {m}}} $$
