Предмет: Физика, автор: alinkapeach111

Колоду завдовжки 3 м, що лежить горизонтально на землі, треба поставити вертикально
Маса колоди 60 кг. Вважаючи g = 10 м/с², визначте роботу, яку треба виконати
ДОПОМОЖІТЬ, БУДЬ ЛАСКА

Ответы

Автор ответа: Mathematique2439

Відповідь:

900 ДЖ

Пояснення: центр маси знаходиться посеред висоти 1,5 м робота яка буде затрачена для цієї роботи буде дорівнювати A=mgh=mgl/2=60•10•1.5=900

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