Предмет: Физика, автор: kaydoyuno

Дитина тягне з постійною швидкістю за допомогою горизонтально розташованої мотузки санчата масою 2 кг, прикладаючи силу 0.6 Н. Зробити малюнок, на якому позначити всі сили прикладні до санчат та визначити роботу кожної сили при переміщенні санчат на 5 м.

Ответы

Автор ответа: SpaceIsTheLimit
3
Там где вектор v, там Fтяги
N-сила реакции опоры
a = fs \cos( \alpha )
A-работа силы F
F=0.6Н-сила
a-угол между ними
S=5м
m=2кг
g=10м/с^2

A (Fтяги)=0.6Н•5м•cos0°=0.6•5=3Дж
A (mg)=A (N) =2•10•5•cos90°=100•0=0Дж
Приложения:
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