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vohmyakov2009
@vohmyakov2009
July 2022
1
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Решать и расписать!!!
небольшой шарик подвешен на нерастяжимой нити шарик отклонили на угол косинус которого равен 0,95. Максимальная скорость шарика 2м/с. Длина нити равна?
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fatt52
Verified answer
Cosα=0.95 v=2 м/с L=?
===
m*v²/2=m*g*h
h=L-L*cosα=L*(1-cosα)
L=v²/(2*g*(1-cosα))=4/(2*10*(1-0.95))=4 м
================================
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Answers & Comments
Verified answer
Cosα=0.95 v=2 м/с L=?===
m*v²/2=m*g*h
h=L-L*cosα=L*(1-cosα)
L=v²/(2*g*(1-cosα))=4/(2*10*(1-0.95))=4 м
================================