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Ответ дан
fatt52

m=0.02 кг    R=0.25 м   T=0.2 c

A) m=0.04 кг

v=2*π*R/T=2*3.14*0.25/0.2=7.85 м/с

F=m*v²/R=0.04*7.85²/0.2=9.86 H

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Б) L=0.5 м

v=2*3.14*0.5/0.2=15.7 м/с

F=0.02*15.7²/0.5=9.86 H

==============

В) T=0.4 c

v=2*3.14*0.25/0.4=3.93 м/с

F=0.02*3.93²/0.25=1.23 H

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