每分钟转3000周,
则周期 T = 60 / 3000 s = 0.02 s
角速度 ω = 2π/T = 100π rad/s = 314 rad/s
线速度 V = ωr = 100π×0.2 m/s = 20 π m/s = 62.8 m/s
每分钟转3000周,
则周期 T = 60 / 3000 s = 0.02 s
角速度 ω = 2π/T = 100π rad/s = 314 rad/s
线速度 V = ωr = 100π×0.2 m/s = 20 π m/s = 62.8 m/s