n=120об/хв=2об/с
R=45см=0,45м
T=1/n=1/2=0,5c
υ=ι/t=2πR/T=2π*0,45/0,5=1,8π≈5,65м/с
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n=120об/хв=2об/с
R=45см=0,45м
T=1/n=1/2=0,5c
υ=ι/t=2πR/T=2π*0,45/0,5=1,8π≈5,65м/с