Предмет: Физика, автор: Мариша98

определить массу груза колеблющегося на пружине с частотой 0.5 Гц., если жесткость пружины составляет 10 Н/м

Ответы

Автор ответа: kirills1

$w = \sqrt{ \frac{k}{m} }$ --------------> m = $\frac{k}{ w^{2} }$

k - коэффициент жёсткости ( 10 Н / м )
ω - частота ( 0,5 Гц = 0,5² = 0,25 Гц )

m = $\frac{10}{0,25}$ = 40 кг

Проверка:

ω = $\sqrt{ \frac{k}{m} }$ = $\sqrt{ \frac{10}{40} }$ = $\sqrt{0,25}$ = 0,5 Гц

Мариша98: Спасибо!!

kirills1: Всегда пожалуйста!)))

Мариша98: с первого корабля на второй одновременно посылаются два звуковых сигнала( по воздуху и по воде).один сигнал был принят после другого через 2 с.
принимаемая скорость звука в воздухе 340 м/с , а в воде 1480 м/с, определить расстояние между кораблями

Мариша98: как её делать? помогите

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